ASTROSAT CZTI

Data Quality Report

Orbit 20180208_G08_071T01_9000001888_level2

Creation date: 2018-07-20T07:19:05.274692
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1G08_071T01_9000001888cztM0_level2_bc.evt modeM0/AS1G08_071T01_9000001888cztM0_level2_quad_clean.evt
Size (bytes)11,321,300,1604,018,798,080
Size10.5 GB 3.7 GB
Events in quadrant A69,022,34125,569,544
Events in quadrant B104,393,99424,926,602
Events in quadrant C61,684,79525,665,551
Events in quadrant D86,923,82024,597,067

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A062400
B062400
C062400
D062400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06502930
B08064640
C06299620
D07165370

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05030
B05030
C05030
D05030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A30614732181.051129%
B306147214016.990433%
C30614724020.784590%
D30614781412.659180%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 356849 306157 8 8 0.00% 0.00%
B 356849 306136 1409 1409 0.39% 0.46%
C 356849 306156 3 3 0.00% 0.00%
D 356849 306149 892 892 0.25% 0.29%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 12 189 4846141 1401.3 15968 15669 3447.1
A 15 222 1900352 546.74 15968 15669 3447.1
A 8 15 701485 198.95 15968 15669 3447.1
B 4 239 23179013 7961.86 15592 15190 2909.3
B 0 219 5460117 1871.53 15592 15190 2909.3
B 4 206 4773689 1635.59 15592 15190 2909.3
C 14 234 227675 62.19 15655 15451 3412.6
C 3 233 97744 24.11 15655 15451 3412.6
C 13 61 93393 22.84 15655 15451 3412.6
D 1 52 15893114 4317.26 15636 15083 3677.8
D 8 195 4868424 1319.63 15636 15083 3677.8
D 13 172 1596494 429.99 15636 15083 3677.8

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter