ASTROSAT CZTI

Data Quality Report

Orbit 57363

Creation date: 2026-05-05T20:33:27.662927
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_102T01_9000006572_57363cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57363cztM0_level2_quad_clean.evt
Size (bytes)471,939,84090,319,680
Size450.1 MB 86.1 MB
Events in quadrant A3,073,157612,809
Events in quadrant B2,895,753659,658
Events in quadrant C6,966,676494,173
Events in quadrant D4,053,733536,980

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135331
B0130331
C0250621
D0162871

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6181911.472254%
B6182460.744096%
C6181120019.414334%
D61812734.416761%

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 7316 6182 46 46 0.63% 0.74%
B 7317 6183 5 5 0.07% 0.08%
C 7315 6181 1058 1058 14.46% 17.12%
D 7316 6182 248 248 3.39% 4.01%

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 13 248 181360 1072.12 679 663 168.5
A 0 12 88482 521.05 679 663 168.5
A 8 4 61709 362.2 679 663 168.5
B 5 185 161072 1121.33 666 640 143.1
B 7 252 17775 119.76 666 640 143.1
B 12 111 17566 118.3 666 640 143.1
C 15 224 4363881 26778.09 593 586 162.9
C 12 252 171802 1050.77 593 586 162.9
C 14 254 43895 265.79 593 586 162.9
D 8 240 632676 3445.6 644 615 183.4
D 2 249 261647 1422.98 644 615 183.4
D 3 12 186437 1012.98 644 615 183.4

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