ASTROSAT CZTI

Data Quality Report

Orbit 55124

Creation date: 2025-12-06T07:04:41.400136
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_022T16_9000006532_55124cztM0_level2.fits modeM0/AS1A14_022T16_9000006532_55124cztM0_level2_quad_clean.evt
Size (bytes)466,240,32096,451,200
Size444.6 MB 92.0 MB
Events in quadrant A3,020,090655,267
Events in quadrant B3,102,391703,464
Events in quadrant C3,311,790618,995
Events in quadrant D7,292,046465,701

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141932
B0144042
C0149952
D0266143

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6840450.657895%
B6840851.242690%
C68411061.549481%
D6840149521.856725%

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 8800 6841 3 3 0.03% 0.04%
B 8800 6842 14 14 0.16% 0.20%
C 8801 6843 41 41 0.47% 0.60%
D 8800 6841 1248 1248 14.18% 18.24%

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 12 115 74627 405.48 732 712 182.3
A 7 190 20220 107.02 732 712 182.3
A 4 3 19776 104.58 732 712 182.3
B 5 185 108006 681.38 726 699 157.5
B 0 63 36234 225.64 726 699 157.5
B 10 247 25169 155.38 726 699 157.5
C 13 3 140095 707.04 713 707 197.1
C 14 254 122203 616.29 713 707 197.1
C 6 223 75410 378.93 713 707 197.1
D 11 129 4152389 23355.99 624 598 177.8
D 3 12 182144 1021.29 624 598 177.8
D 2 252 115087 644.06 624 598 177.8

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