ASTROSAT CZTI

Data Quality Report

Orbit 55203

Creation date: 2025-12-11T13:26:14.180503
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_55203cztM0_level2.fits modeM0/AS1A14_022T16_9000006532_55203cztM0_level2_quad_clean.evt
Size (bytes)497,949,120118,941,120
Size474.9 MB 113.4 MB
Events in quadrant A3,874,279786,834
Events in quadrant B3,584,884828,143
Events in quadrant C4,012,823741,512
Events in quadrant D6,328,500680,147

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176471
B0169781
C0182762
D0246961

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81281642.017717%
B81281902.337598%
C81281141.402559%
D81285336.557579%

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 8533 8129 36 36 0.42% 0.44%
B 8533 8129 5 5 0.06% 0.06%
C 8533 8129 66 66 0.77% 0.81%
D 8533 8129 410 410 4.80% 5.04%

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 95952 426.59 895 872 222.9
A 3 14 95204 423.23 895 872 222.9
A 4 249 76899 341.11 895 872 222.9
B 4 81 40527 207.37 876 845 191.4
B 10 247 28534 144.7 876 845 191.4
B 0 182 27534 139.47 876 845 191.4
C 13 3 322659 1352.93 860 852 237.9
C 14 254 82494 343.24 860 852 237.9
C 12 252 69801 289.87 860 852 237.9
D 11 129 2206170 9205.32 846 811 239.6
D 7 96 357703 1489.69 846 811 239.6
D 2 249 124943 518.14 846 811 239.6

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