ASTROSAT CZTI

Data Quality Report

Orbit 21280

Creation date: 2024-06-27T18:25:47.989362
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/AS1A05_037T01_9000003140_21280cztM0_level2.evt modeM0/AS1A05_037T01_9000003140_21280cztM0_level2_quad_clean.evt
Size (bytes)494,496,00091,149,120
Size471.6 MB 86.9 MB
Events in quadrant A3,206,449593,242
Events in quadrant B4,394,665569,355
Events in quadrant C3,317,412579,253
Events in quadrant D3,614,615563,548

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137453
B0172372
C0140222
D0150602

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6515460.706063%
B65154426.784344%
C6515911.396777%
D6515701.074444%

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 7470 6516 0 0 0.00% 0.00%
B 7470 6516 340 340 4.55% 5.22%
C 7470 6516 22 22 0.29% 0.34%
D 7470 6516 30 30 0.40% 0.46%

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 9 143 25331 148.88 822 804 164.7
A 13 254 10471 58.68 822 804 164.7
A 0 226 7162 38.59 822 804 164.7
B 10 245 1144208 7556.89 794 776 151.3
B 0 190 27478 176.47 794 776 151.3
B 0 245 24300 155.47 794 776 151.3
C 14 238 120803 656.04 779 785 182.9
C 0 207 120333 653.47 779 785 182.9
C 3 233 23202 122.54 779 785 182.9
D 1 52 318869 1660.94 790 768 191.5
D 13 153 87749 454.16 790 768 191.5
D 13 174 65386 337.4 790 768 191.5

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