ASTROSAT CZTI

Data Quality Report

Orbit 06236

Creation date: 2024-06-27T15:04:33.186062
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/AS1A02_151T01_9000000818_06236cztM0_level2.evt modeM0/AS1A02_151T01_9000000818_06236cztM0_level2_quad_clean.evt
Size (bytes)507,291,84080,009,280
Size483.8 MB 76.3 MB
Events in quadrant A3,496,581487,391
Events in quadrant B4,229,120483,899
Events in quadrant C3,313,368489,753
Events in quadrant D3,848,411473,508

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149233
B0172122
C0146412
D0163452

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70021472.099400%
B70022884.113111%
C70021121.599543%
D70021351.928021%

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 9242 7002 4 4 0.04% 0.06%
B 9242 7002 121 121 1.31% 1.73%
C 9242 7002 0 0 0.00% 0.00%
D 9242 7002 3 3 0.03% 0.04%

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 8 15 82892 468.44 866 849 175.1
A 15 236 54968 309.01 866 849 175.1
A 10 253 16760 90.85 866 849 175.1
B 3 64 729251 4456.96 865 844 163.4
B 0 219 67208 406.07 865 844 163.4
B 15 204 32715 195.01 865 844 163.4
C 13 61 6690 29.98 847 851 194.8
C 1 16 3805 15.17 847 851 194.8
C 8 222 3454 13.36 847 851 194.8
D 2 63 439233 2139.76 847 821 204.9
D 11 241 82228 397.32 847 821 204.9
D 14 173 41491 198.5 847 821 204.9

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