ASTROSAT CZTI

Data Quality Report

Orbit 58932

Creation date: 2026-08-19T09:45:04.365927
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_004T07_9000006598_58932cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58932cztM0_level2_quad_clean.evt
Size (bytes)805,587,84085,691,520
Size768.3 MB 81.7 MB
Events in quadrant A7,528,922557,795
Events in quadrant B3,847,510704,151
Events in quadrant C4,647,384629,179
Events in quadrant D13,276,833236,059

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0269172
B0160592
C0184972
D0439392

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6703133519.916455%
B67032373.535730%
C67033004.475608%
D6702441365.846016%

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 7818 6704 1146 1146 14.66% 17.09%
B 7818 6704 131 131 1.68% 1.95%
C 7818 6704 257 257 3.29% 3.83%
D 7817 6702 4320 4320 55.26% 64.46%

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 14 238 3990571 23096.54 696 680 172.7
A 15 233 691410 3998.47 696 680 172.7
A 3 14 81769 469.41 696 680 172.7
B 4 171 389957 2461.75 738 711 158.1
B 5 185 204283 1287.47 738 711 158.1
B 4 201 134177 844.09 738 711 158.1
C 4 5 1368185 6882.43 720 713 198.7
C 12 252 176999 887.24 720 713 198.7
C 6 223 124474 622.88 720 713 198.7
D 12 110 10211433 61587.76 574 548 165.8
D 11 129 380318 2290.61 574 548 165.8
D 7 222 135519 814.09 574 548 165.8

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

TCT plots

Parameter TCT0 TCT_healed
Tct