ASTROSAT CZTI

Data Quality Report

Orbit 36371

Creation date: 2022-06-23T12:54:20.383693
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/AS1A11_097T24_9000005196_36371cztM0_level2.evt modeM0/AS1A11_097T24_9000005196_36371cztM0_level2_quad_clean.evt
Size (bytes)529,128,00060,318,720
Size504.6 MB 57.5 MB
Events in quadrant A2,875,942376,663
Events in quadrant B4,532,633350,098
Events in quadrant C2,852,663368,413
Events in quadrant D5,377,288332,325

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120953
B0172662
C0119312
D0198632

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5704380.666199%
B570467311.798738%
C5704330.578541%
D570459410.413745%

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 7256 5704 26 26 0.36% 0.46%
B 7256 5703 532 532 7.33% 9.33%
C 7256 5703 34 34 0.47% 0.60%
D 7256 5703 620 620 8.54% 10.87%

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 10 83 187841 1403.86 656 643 133.3
A 9 143 121960 909.8 656 643 133.3
A 12 189 25388 185.57 656 643 133.3
B 5 172 1977051 16450.04 615 599 120.1
B 5 236 47145 387.4 615 599 120.1
B 0 190 42889 351.98 615 599 120.1
C 15 214 244574 1647.81 629 634 148.0
C 0 10 155137 1043.66 629 634 148.0
C 13 61 4139 23.68 629 634 148.0
D 12 6 926495 6179.93 611 595 149.8
D 2 249 913429 6092.72 611 595 149.8
D 2 250 472254 3148.09 611 595 149.8

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