ASTROSAT CZTI

Data Quality Report

Orbit 53629

Creation date: 2025-08-28T11:12:10.610857
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_53629cztM0_level2.fits modeM0/AS1A14_022T05_9000006504_53629cztM0_level2_quad_clean.evt
Size (bytes)275,878,08019,779,840
Size263.1 MB 18.9 MB
Events in quadrant A2,056,791138,561
Events in quadrant B1,656,201172,603
Events in quadrant C4,123,94328,761
Events in quadrant D2,241,193133,701

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A072541
B060901
C0133751
D078294

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A170250929.905993%
B170232819.271445%
C1702147486.603995%
D170144526.161082%

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 2857 1703 379 379 13.27% 22.25%
B 2857 1703 114 114 3.99% 6.69%
C 2857 1703 1427 1427 49.95% 83.79%
D 2856 1702 357 357 12.50% 20.98%

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 4 95 847843 16395.5 205 199 51.7
A 3 78 285846 5525.11 205 199 51.7
A 3 63 56598 1090.89 205 199 51.7
B 15 20 309195 6778.76 205 198 45.6
B 4 206 231391 5071.9 205 198 45.6
B 4 170 147884 3239.93 205 198 45.6
C 1 241 3068209 107416.68 99 98 28.6
C 15 224 426847 14940.78 99 98 28.6
C 13 3 83440 2917.86 99 98 28.6
D 8 176 1246932 21791.01 196 186 57.2
D 2 153 62036 1081.03 196 186 57.2
D 7 70 57115 995.02 196 186 57.2

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