ASTROSAT CZTI

Data Quality Report

Orbit 56843

Creation date: 2026-03-31T21:32:46.171916
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_083T03_9000006562_56843cztM0_level2.fits modeM0/AS1A14_083T03_9000006562_56843cztM0_level2_quad_clean.evt
Size (bytes)414,976,32096,292,800
Size395.8 MB 91.8 MB
Events in quadrant A3,304,089631,909
Events in quadrant B3,566,837667,393
Events in quadrant C3,230,470605,798
Events in quadrant D4,748,428552,332

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144591
B0152951
C0144493
D0188161

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6573771.171459%
B65731952.966682%
C6572530.806452%
D65723645.538649%

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 7483 6574 22 22 0.29% 0.33%
B 7483 6574 102 102 1.36% 1.55%
C 7482 6573 27 27 0.36% 0.41%
D 7482 6573 316 316 4.22% 4.81%

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 14 163539 922.77 711 693 176.5
A 10 251 161257 909.84 711 693 176.5
A 7 64 137692 776.31 711 693 176.5
B 0 173 213085 1439.58 690 665 147.6
B 10 16 207763 1403.51 690 665 147.6
B 5 185 187223 1264.31 690 665 147.6
C 13 3 275439 1474.43 680 673 186.4
C 1 16 188363 1007.17 680 673 186.4
C 12 252 34817 183.22 680 673 186.4
D 2 249 1192247 6212.41 675 645 191.8
D 8 240 587891 3061.61 675 645 191.8
D 11 129 109460 567.31 675 645 191.8

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