ASTROSAT CZTI

Data Quality Report

Orbit 22807

Creation date: 2024-06-27T18:46:02.294376
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/AS1A07_054T01_9000003370_22807cztM0_level2.evt modeM0/AS1A07_054T01_9000003370_22807cztM0_level2_quad_clean.evt
Size (bytes)520,447,680139,916,160
Size496.3 MB 133.4 MB
Events in quadrant A3,350,796959,154
Events in quadrant B3,440,114962,683
Events in quadrant C3,407,974917,675
Events in quadrant D5,070,332893,085

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147883
B0149872
C0149632
D0201462

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7269110.151328%
B7269170.233870%
C7269550.756638%
D72693234.443527%

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 9164 7271 0 0 0.00% 0.00%
B 9164 7271 2 2 0.02% 0.03%
C 9164 7271 3 3 0.03% 0.04%
D 9164 7271 195 195 2.13% 2.68%

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 12810 68.6 869 850 174.3
A 0 226 7358 37.33 869 850 174.3
A 3 137 7281 36.89 869 850 174.3
B 4 173 20941 123.13 865 845 163.2
B 12 111 19628 115.09 865 845 163.2
B 11 111 17063 99.37 865 845 163.2
C 14 238 133084 681.05 832 837 194.2
C 0 207 26345 131.36 832 837 194.2
C 3 233 7366 33.62 832 837 194.2
D 1 52 1720067 8533.32 830 804 201.5
D 2 152 114909 566.34 830 804 201.5
D 2 234 29921 144.52 830 804 201.5

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