ASTROSAT CZTI

Data Quality Report

Orbit 58456

Creation date: 2026-07-18T09:37:35.367612
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_045T01_9000006590_58456cztM0_level2.fits modeM0/AS1A14_045T01_9000006590_58456cztM0_level2_quad_clean.evt
Size (bytes)427,901,76092,894,400
Size408.1 MB 88.6 MB
Events in quadrant A3,913,284574,210
Events in quadrant B4,174,437658,661
Events in quadrant C2,889,900603,441
Events in quadrant D4,368,659534,495

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161321
B0165891
C0132281
D0174922

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63365468.617424%
B63363054.813763%
C6337170.268266%
D63363936.202652%

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 7446 6336 368 368 4.94% 5.81%
B 7446 6336 177 177 2.38% 2.79%
C 7447 6338 2 2 0.03% 0.03%
D 7446 6336 332 332 4.46% 5.24%

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 12 80 1125306 6635.25 683 664 169.5
A 12 114 49557 288.46 683 664 169.5
A 3 245 39467 228.93 683 664 169.5
B 5 172 556890 3650.69 705 680 152.4
B 2 249 383270 2511.13 705 680 152.4
B 8 128 121319 791.82 705 680 152.4
C 13 3 41841 215.47 695 691 191.0
C 6 223 30810 157.71 695 691 191.0
C 14 254 30522 156.2 695 691 191.0
D 8 240 1217992 6360.21 668 638 191.4
D 6 239 278576 1452.12 668 638 191.4
D 5 173 46605 240.16 668 638 191.4

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