ASTROSAT CZTI

Data Quality Report

Orbit 53653

Creation date: 2025-08-29T07:18:48.835175
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_022T05_9000006504_53653cztM0_level2.fits modeM0/AS1A14_022T05_9000006504_53653cztM0_level2_quad_clean.evt
Size (bytes)2,050,292,160152,046,720
Size1.9 GB 145.0 MB
Events in quadrant A23,581,042628,536
Events in quadrant B13,772,9611,109,496
Events in quadrant C24,661,834725,181
Events in quadrant D12,753,8911,131,715

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02960
B02960
C02960
D02960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800702
B0510702
C0832892
D0483087

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14591845757.960387%
B14591346423.740662%
C14592683546.840735%
D14589153810.542189%

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 15097 14592 5253 5253 34.79% 36.00%
B 15098 14593 1806 1806 11.96% 12.38%
C 15099 14594 6174 6174 40.89% 42.31%
D 15098 14593 1316 1316 8.72% 9.02%

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 3 78 9222535 35846.65 1027 1002 257.2
A 3 63 8092267 31452.98 1027 1002 257.2
A 14 254 1135969 4411.93 1027 1002 257.2
B 4 206 6162423 22674.18 1279 1232 271.7
B 5 172 713270 2620.42 1279 1232 271.7
B 7 0 594031 2181.6 1279 1232 271.7
C 1 241 12001750 39225.37 1091 1082 305.9
C 15 224 4010254 13104.37 1091 1082 305.9
C 14 80 939430 3067.08 1091 1082 305.9
D 8 176 2928996 6875.13 1470 1403 425.8
D 10 172 669476 1568.89 1470 1403 425.8
D 11 245 647451 1517.17 1470 1403 425.8

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