ASTROSAT CZTI

Data Quality Report

Orbit 34205

Creation date: 2022-01-25T06:44:07.300856
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1T04_086T01_9000004884_34205cztM0_level2.evt modeM0/AS1T04_086T01_9000004884_34205cztM0_level2_quad_clean.evt
Size (bytes)463,199,04039,911,040
Size441.7 MB 38.1 MB
Events in quadrant A1,754,032266,536
Events in quadrant B5,777,999180,025
Events in quadrant C2,024,759278,074
Events in quadrant D4,240,172241,297

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A071952
B0194651
C078341
D0150291

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A340370.205701%
B3403187855.186600%
C3403501.469292%
D340338211.225389%

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 5495 3404 2 2 0.04% 0.06%
B 5495 3404 1672 1672 30.43% 49.12%
C 5495 3404 33 33 0.60% 0.97%
D 5495 3404 352 352 6.41% 10.34%

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 15 169 67832 786.94 428 420 85.7
A 9 143 11882 133.8 428 420 85.7
A 10 83 11361 127.72 428 420 85.7
B 5 31 2313810 34924.05 348 340 66.2
B 5 15 1430800 21594.16 348 340 66.2
B 5 172 254580 3838.0 348 340 66.2
C 0 10 205374 2122.79 418 422 96.5
C 15 214 154379 1594.61 418 422 96.5
C 15 159 14162 142.31 418 422 96.5
D 12 217 1119767 11287.09 403 392 99.2
D 2 250 816422 8228.34 403 392 99.2
D 8 195 522662 5266.25 403 392 99.2

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