ASTROSAT CZTI

Data Quality Report

Orbit 20160804_G05_154T01_9000000576_level2

Creation date: 2025-11-04T14:57:19.377394
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/AS1G05_154T01_9000000576cztM0_level2.fits modeM0/AS1G05_154T01_9000000576cztM0_level2_quad_clean.evt
Size (bytes)885,286,080834,166,080
Size844.3 MB 795.5 MB
Events in quadrant A5,439,5765,013,236
Events in quadrant B5,222,3704,965,650
Events in quadrant C5,395,3074,862,017
Events in quadrant D3,880,4843,561,079

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020340
B020340
C020340
D020300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01230
B01230
C01230
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02126090
B02286870
C02108570
D03771890

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10007221872.185426%
B10006236303.627751%
C10008414451.443787%
D1000722314523.128348%

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 119298 100233 0 0 0.00% 0.00%
B 119298 100211 0 0 0.00% 0.00%
C 119298 100251 0 0 0.00% 0.00%
D 119297 96105 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 14 188 5420 11.21 1409 1307 366.8
A 0 29 5341 11.0 1409 1307 366.8
A 7 110 4726 9.32 1409 1307 366.8
B 2 9 4692 12.05 1379 1306 281.0
B 14 254 3630 8.27 1379 1306 281.0
B 12 226 3616 8.22 1379 1306 281.0
C 1 80 3935 6.91 1422 1310 380.0
C 1 81 3827 6.62 1422 1310 380.0
C 12 241 3778 6.5 1422 1310 380.0
D 11 82 3133 7.09 1105 997 301.1
D 3 14 2947 6.47 1105 997 301.1
D 3 31 2836 6.11 1105 997 301.1

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