ASTROSAT CZTI

Data Quality Report

Orbit 53690

Creation date: 2025-08-31T18:08:29.940837
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_53690cztM0_level2.fits modeM0/AS1A14_022T05_9000006504_53690cztM0_level2_quad_clean.evt
Size (bytes)889,885,44074,390,400
Size848.7 MB 70.9 MB
Events in quadrant A11,830,361301,143
Events in quadrant B3,741,509646,991
Events in quadrant C11,110,238340,205
Events in quadrant D5,773,068525,600

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0394611
B0153351
C0373341
D0215262

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6284354256.365372%
B62842924.646722%
C6285299947.716786%
D62845608.911521%

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 7218 6283 3238 3238 44.86% 51.54%
B 7219 6284 82 82 1.14% 1.30%
C 7220 6285 2857 2857 39.57% 45.46%
D 7219 6284 497 497 6.88% 7.91%

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 9188964 65738.59 563 550 139.8
A 3 78 223417 1594.5 563 550 139.8
A 12 17 62753 445.03 563 550 139.8
B 5 185 683616 4673.04 683 661 146.1
B 7 0 80445 545.91 683 661 146.1
B 15 32 67728 458.9 683 661 146.1
C 15 224 3532135 24867.29 514 510 142.0
C 1 241 2500232 17601.33 514 510 142.0
C 7 64 1765021 12424.48 514 510 142.0
D 8 176 1181848 6214.21 667 639 190.1
D 2 62 512143 2690.96 667 639 190.1
D 11 245 397092 2085.69 667 639 190.1

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