ASTROSAT CZTI

Data Quality Report

Orbit 24141

Creation date: 2024-06-27T19:02:34.894935
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_069T01_9000003570_24141cztM0_level2.evt modeM0/AS1A07_069T01_9000003570_24141cztM0_level2_quad_clean.evt
Size (bytes)873,725,76071,654,400
Size833.2 MB 68.3 MB
Events in quadrant A3,112,471488,625
Events in quadrant B8,282,207431,799
Events in quadrant C3,123,546463,510
Events in quadrant D11,525,085352,444

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129491
B0284601
C0129781
D0385191

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6192220.355297%
B6192264442.700258%
C6193340.549007%
D6193320551.751978%

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 7382 6193 0 0 0.00% 0.00%
B 7382 6193 2479 2479 33.58% 40.03%
C 7383 6194 0 0 0.00% 0.00%
D 7383 6194 3108 3108 42.10% 50.18%

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 10326 59.22 806 792 161.0
A 0 226 7059 38.93 806 792 161.0
A 3 137 6975 38.41 806 792 161.0
B 4 200 5570259 43234.04 688 671 128.8
B 12 111 14974 111.03 688 671 128.8
B 11 111 13346 98.39 688 671 128.8
C 14 238 122722 679.78 764 770 179.4
C 1 16 13020 68.28 764 770 179.4
C 0 239 6729 33.22 764 770 179.4
D 7 238 9160361 67434.86 563 550 135.8
D 8 195 120720 884.7 563 550 135.8
D 1 52 99966 731.9 563 550 135.8

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