ASTROSAT CZTI

Data Quality Report

Orbit 59125

Creation date: 2026-09-01T10:15:09.482068
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/AS1A14_004T02_9000006600_59125cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59125cztM0_level2_quad_clean.evt
Size (bytes)817,545,60083,525,760
Size779.7 MB 79.7 MB
Events in quadrant A3,176,808671,405
Events in quadrant B3,982,420694,965
Events in quadrant C5,341,270629,918
Events in quadrant D17,226,28351,413

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145782
B0167972
C0206772
D0557423

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6902550.796870%
B69023294.766734%
C69022463.564184%
D6901634891.986669%

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 7887 6903 18 18 0.23% 0.26%
B 7887 6903 207 207 2.62% 3.00%
C 7887 6903 103 103 1.31% 1.49%
D 7885 6900 6014 6014 76.27% 87.16%

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 10 251 153327 817.54 761 740 186.6
A 7 160 22207 115.02 761 740 186.6
A 13 248 15744 80.39 761 740 186.6
B 4 236 734730 4638.05 743 714 158.3
B 5 185 140266 881.79 743 714 158.3
B 1 238 32037 197.92 743 714 158.3
C 3 233 2066916 10273.76 730 724 201.1
C 6 223 139860 691.83 730 724 201.1
C 13 3 112694 556.75 730 724 201.1
D 12 1 16161383 352089.83 154 146 45.9
D 12 110 313008 6816.03 154 146 45.9
D 11 129 59145 1285.36 154 146 45.9

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

TCT plots

Parameter TCT0 TCT_healed
Tct