ASTROSAT CZTI

Data Quality Report

Orbit 56680

Creation date: 2026-03-20T22:33:39.190326
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_083T06_9000006558_56680cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56680cztM0_level2_quad_clean.evt
Size (bytes)736,827,84077,440,320
Size702.7 MB 73.9 MB
Events in quadrant A5,602,214593,107
Events in quadrant B2,968,582651,171
Events in quadrant C14,112,581151,645
Events in quadrant D4,111,342516,836

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208711
B0132351
C0462586
D0165721

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61913185.136488%
B6191580.936844%
C6190476276.930533%
D61903645.880452%

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 7326 6192 330 330 4.50% 5.33%
B 7326 6192 16 16 0.22% 0.26%
C 7325 6191 4711 4711 64.31% 76.09%
D 7325 6191 337 337 4.60% 5.44%

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 2198156 13461.3 659 641 163.2
A 8 26 312416 1909.83 659 641 163.2
A 8 249 165992 1012.89 659 641 163.2
B 10 247 102245 724.55 659 636 140.2
B 4 156 67753 478.59 659 636 140.2
B 0 183 42580 299.09 659 636 140.2
C 15 230 11945828 116470.86 369 365 102.6
C 12 252 290922 2832.99 369 365 102.6
C 13 3 115843 1125.94 369 365 102.6
D 2 249 1081154 6119.15 623 595 176.6
D 7 96 128846 726.28 623 595 176.6
D 15 93 91472 514.63 623 595 176.6

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