ASTROSAT CZTI

Data Quality Report

Orbit 22737

Creation date: 2024-06-27T18:45:00.065514
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/AS1A08_007T01_9000003362_22737cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22737cztM0_level2_quad_clean.evt
Size (bytes)642,271,680125,611,200
Size612.5 MB 119.8 MB
Events in quadrant A4,435,978802,110
Events in quadrant B4,684,067813,700
Events in quadrant C4,554,940790,488
Events in quadrant D5,163,292770,476

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01840
B01840
C01840
D01840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187652
B0194322
C0191882
D0211382

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9047420.464242%
B9048710.784704%
C90481151.270999%
D90481491.646773%

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 11282 9049 0 0 0.00% 0.00%
B 11283 9050 4 4 0.04% 0.04%
C 11283 9050 0 0 0.00% 0.00%
D 11283 9050 67 67 0.59% 0.74%

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 13 254 14151 56.88 1150 1126 229.0
A 0 226 10062 39.02 1150 1126 229.0
A 3 137 9224 35.36 1150 1126 229.0
B 0 197 80545 371.81 1144 1117 213.6
B 0 230 65407 300.94 1144 1117 213.6
B 0 245 36718 166.65 1144 1117 213.6
C 14 238 176397 679.24 1118 1126 258.0
C 10 22 17867 64.88 1118 1126 258.0
C 13 61 7764 25.72 1118 1126 258.0
D 1 52 402570 1477.62 1133 1103 271.7
D 12 227 144594 528.13 1133 1103 271.7
D 12 233 139579 509.67 1133 1103 271.7

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