ASTROSAT CZTI

Data Quality Report

Orbit 21362

Creation date: 2024-06-27T18:26:46.930456
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/AS1A05_041T01_9000003150_21362cztM0_level2.evt modeM0/AS1A05_041T01_9000003150_21362cztM0_level2_quad_clean.evt
Size (bytes)516,136,32071,498,880
Size492.2 MB 68.2 MB
Events in quadrant A3,423,468437,856
Events in quadrant B3,542,468443,340
Events in quadrant C4,282,153419,805
Events in quadrant D3,942,513410,647

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141292
B0144434
C0168972
D0157502

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6504861.322263%
B65031121.722282%
C65031552.383515%
D65031702.614178%

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 7659 6504 0 0 0.00% 0.00%
B 7658 6503 16 16 0.21% 0.25%
C 7658 6503 11 11 0.14% 0.17%
D 7658 6503 111 111 1.45% 1.71%

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 5 168 33730 186.95 880 864 175.8
A 13 254 9350 48.27 880 864 175.8
A 0 226 7499 37.74 880 864 175.8
B 3 64 79755 485.17 864 845 162.6
B 0 197 46363 279.86 864 845 162.6
B 0 230 41426 249.51 864 845 162.6
C 3 233 933961 4877.39 825 834 191.3
C 14 238 130148 675.92 825 834 191.3
C 13 61 5773 25.82 825 834 191.3
D 12 235 668408 3288.87 843 819 203.0
D 13 172 30559 146.51 843 819 203.0
D 2 234 24034 114.37 843 819 203.0

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