ASTROSAT CZTI

Data Quality Report

Orbit 55348

Creation date: 2026-01-05T09:55:11.920566
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_009T01_9000006534_55348cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55348cztM0_level2_quad_clean.evt
Size (bytes)557,513,280115,934,400
Size531.7 MB 110.6 MB
Events in quadrant A3,956,831768,024
Events in quadrant B4,046,389815,582
Events in quadrant C4,002,784744,974
Events in quadrant D7,994,997612,249

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180240
B0183570
C0182940
D0295830

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81911111.355146%
B81921972.404785%
C8192750.915527%
D8191110813.527042%

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 8886 8194 37 37 0.42% 0.45%
B 8887 8195 19 19 0.21% 0.23%
C 8887 8195 42 42 0.47% 0.51%
D 8886 8194 883 883 9.94% 10.78%

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 0 8 211850 971.83 885 858 217.1
A 3 78 118367 541.25 885 858 217.1
A 3 128 36188 162.73 885 858 217.1
B 0 199 248169 1303.15 878 842 189.8
B 5 185 174258 913.72 878 842 189.8
B 0 182 33791 173.61 878 842 189.8
C 12 252 118548 495.65 873 864 237.4
C 9 38 118356 494.84 873 864 237.4
C 13 3 116306 486.21 873 864 237.4
D 11 129 3321476 14526.69 811 777 228.6
D 3 12 397687 1736.32 811 777 228.6
D 11 176 330258 1441.34 811 777 228.6

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