ASTROSAT CZTI

Data Quality Report

Orbit 53814

Creation date: 2025-09-09T03:35:27.163128
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_022T04_9000006506_53814cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53814cztM0_level2_quad_clean.evt
Size (bytes)2,829,715,200177,805,440
Size2.6 GB 169.6 MB
Events in quadrant A36,995,526606,176
Events in quadrant B9,160,8011,757,272
Events in quadrant C22,284,3961,213,453
Events in quadrant D34,940,172579,564

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01223222
B0401874
C0784802
D01160527

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03600
B03600
C03600
D03600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A177801174066.029246%
B177793261.833624%
C17781440424.768011%
D177801130763.593926%

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 31494 17782 11174 11174 35.48% 62.84%
B 31495 17782 119 119 0.38% 0.67%
C 31496 17783 3769 3769 11.97% 21.19%
D 31495 17782 9957 9957 31.61% 55.99%

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 63 31043987 101323.11 1241 1213 306.4
A 4 249 417161 1357.65 1241 1213 306.4
A 8 249 256046 831.77 1241 1213 306.4
B 5 185 1052913 2663.23 1863 1798 394.7
B 0 213 145248 363.46 1863 1798 394.7
B 5 172 102586 255.37 1863 1798 394.7
C 15 224 7127091 16200.98 1600 1590 439.8
C 1 241 3921434 8912.4 1600 1590 439.8
C 15 157 2547116 5787.67 1600 1590 439.8
D 8 176 24360880 80016.32 1045 1001 304.4
D 2 172 1701240 5584.87 1045 1001 304.4
D 1 241 1239719 4068.89 1045 1001 304.4

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