ASTROSAT CZTI

Data Quality Report

Orbit 20210116_A10_021T04_9000004116_level2

Creation date: 2021-01-18T12:38:02.383124
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A10_021T04_9000004116cztM0_level2_bc.evt modeM0/AS1A10_021T04_9000004116cztM0_level2_quad_clean.evt
Size (bytes)3,866,719,6801,073,617,920
Size3.6 GB 1023.9 MB
Events in quadrant A18,519,6186,805,487
Events in quadrant B23,364,1466,897,564
Events in quadrant C22,271,1066,632,165
Events in quadrant D47,143,4116,333,592

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01787600
B01965240
C01969150
D02790350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017420
B017420
C017420
D017420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01330
B01330
C01330
D01330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A853219031.058356%
B8532122622.651164%
C8532123912.802358%
D8532182489.667022%

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 98766 85310 0 0 0.00% 0.00%
B 98766 85306 99 99 0.10% 0.12%
C 98766 85306 10 10 0.01% 0.01%
D 98766 85309 1842 1842 1.87% 2.16%

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 15 174 261073 254.78 4696 4615 1006.6
A 13 254 144264 138.73 4696 4615 1006.6
A 6 16 45186 40.3 4696 4615 1006.6
B 10 245 4545226 5222.19 4684 4585 869.5
B 15 33 355159 403.2 4684 4585 869.5
B 10 247 191307 214.75 4684 4585 869.5
C 3 233 3979094 3760.1 4502 4487 1057.0
C 2 16 840602 790.99 4502 4487 1057.0
C 14 254 168402 155.07 4502 4487 1057.0
D 1 52 15907939 15767.72 4436 4301 1008.6
D 8 195 9110409 9028.28 4436 4301 1008.6
D 7 80 3327831 3295.13 4436 4301 1008.6

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