ASTROSAT CZTI

Data Quality Report

Orbit 20180315_A04_196T04_9000001982_level2

Creation date: 2018-06-29T10:27:57.725775
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/AS1A04_196T04_9000001982cztM0_level2_bc.evt modeM0/AS1A04_196T04_9000001982cztM0_level2_quad_clean.evt
Size (bytes)189,423,36096,203,520
Size180.6 MB 91.7 MB
Events in quadrant A1,427,927624,830
Events in quadrant B1,301,854648,132
Events in quadrant C1,243,124648,628
Events in quadrant D1,384,748610,708

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121380
B0118400
C0115230
D0120450

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5445250.459137%
B5445270.495868%
C5445140.257117%
D5445350.642792%

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 6861 5446 0 0 0.00% 0.00%
B 6861 5446 0 0 0.00% 0.00%
C 6861 5446 0 0 0.00% 0.00%
D 6861 5446 0 0 0.00% 0.00%

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 8 15 254092 3835.74 301 295 66.2
A 1 162 8161 118.88 301 295 66.2
A 15 69 5423 77.5 301 295 66.2
B 0 244 83012 1394.51 308 301 59.3
B 0 214 12286 202.07 308 301 59.3
B 3 64 11253 184.65 308 301 59.3
C 6 96 34268 496.75 304 301 68.4
C 14 234 13458 192.42 304 301 68.4
C 3 233 3234 42.89 304 301 68.4
D 1 52 115842 1655.07 300 291 69.8
D 8 195 54747 779.99 300 291 69.8
D 14 35 24840 351.62 300 291 69.8

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