ASTROSAT CZTI

Data Quality Report

Orbit 58091

Creation date: 2026-06-23T20:15:00.918907
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_042T02_9000006586_58091cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58091cztM0_level2_quad_clean.evt
Size (bytes)579,136,32090,239,040
Size552.3 MB 86.1 MB
Events in quadrant A2,853,774645,155
Events in quadrant B7,455,070586,403
Events in quadrant C2,881,248606,014
Events in quadrant D7,771,563465,512

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127091
B0265801
C0129671
D0273801

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6138891.449984%
B6139116218.928164%
C6138911.482568%
D6138139522.727273%

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 7318 6138 0 0 0.00% 0.00%
B 7319 6139 893 893 12.20% 14.55%
C 7318 6138 14 14 0.19% 0.23%
D 7318 6138 1207 1207 16.49% 19.66%

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 2 143 16227 86.58 718 700 179.3
A 2 79 14332 76.01 718 700 179.3
A 10 251 14099 74.71 718 700 179.3
B 10 128 4023398 28010.97 667 643 143.6
B 5 172 439189 3053.65 667 643 143.6
B 4 201 61149 421.31 667 643 143.6
C 6 223 84507 445.4 686 680 188.2
C 12 252 45047 235.74 686 680 188.2
C 15 201 35764 186.41 686 680 188.2
D 12 110 3337168 18496.69 639 611 180.4
D 3 224 1124600 6231.0 639 611 180.4
D 8 160 319986 1770.5 639 611 180.4

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