ASTROSAT CZTI

Data Quality Report

Orbit 10253

Creation date: 2024-06-27T15:56:55.204802
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/AS1A03_052T01_9000001480_10253cztM0_level2.evt modeM0/AS1A03_052T01_9000001480_10253cztM0_level2_quad_clean.evt
Size (bytes)481,164,48091,995,840
Size458.9 MB 87.7 MB
Events in quadrant A3,150,397608,974
Events in quadrant B3,411,370580,435
Events in quadrant C3,057,357599,943
Events in quadrant D4,498,756531,535

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290142
B0290147
C0290151
D0279130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02800413879
B03173017396
C02884814847
D04112923246

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A072
B083
C083
D072

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6806510.749339%
B6523731.119117%
C6795190.279617%
D6538741.131845%

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 8371 7710 0 0 0.00% 0.00%
B 8371 7493 5 5 0.06% 0.07%
C 8371 7683 0 0 0.00% 0.00%
D 8371 7296 8 8 0.10% 0.11%

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 3 1 27674 161.64 808 790 166.3
A 15 174 8815 48.25 808 790 166.3
A 0 226 7573 40.78 808 790 166.3
B 11 51 156736 1032.51 778 761 151.1
B 4 239 82610 541.82 778 761 151.1
B 0 214 56360 368.05 778 761 151.1
C 8 128 9676 48.84 777 780 182.2
C 13 61 5749 27.28 777 780 182.2
C 8 112 5741 27.23 777 780 182.2
D 8 195 775131 4290.2 739 717 180.5
D 1 52 431461 2386.29 739 717 180.5
D 2 16 149008 821.52 739 717 180.5

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