ASTROSAT CZTI

Data Quality Report

Orbit 55093

Creation date: 2025-12-04T04:18:59.164275
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_025T01_9000006530_55093cztM0_level2.fits modeM0/AS1A14_025T01_9000006530_55093cztM0_level2_quad_clean.evt
Size (bytes)440,429,760100,416,960
Size420.0 MB 95.8 MB
Events in quadrant A2,936,824680,512
Events in quadrant B2,992,610715,425
Events in quadrant C4,397,640614,100
Events in quadrant D5,466,300573,452

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01361311
B01380910
C01765828
D02082646

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6562240.365742%
B6562420.640049%
C65582513.827386%
D65575398.220223%

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 7507 6568 2 2 0.03% 0.03%
B 7506 6567 5 5 0.07% 0.08%
C 7507 6568 176 176 2.34% 2.68%
D 7507 6568 539 539 7.18% 8.21%

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 3 41520 223.13 728 711 182.9
A 3 61 27566 146.84 728 711 182.9
A 7 160 20975 110.8 728 711 182.9
B 5 185 39612 248.68 717 692 156.5
B 5 172 35188 220.41 717 692 156.5
B 4 21 33484 209.53 717 692 156.5
C 3 242 746486 3847.11 696 689 193.9
C 13 3 273442 1406.97 696 689 193.9
C 6 223 186678 959.4 696 689 193.9
D 15 94 1267539 6416.9 683 652 197.4
D 6 239 432392 2186.8 683 652 197.4
D 3 12 341344 1725.64 683 652 197.4

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