ASTROSAT CZTI

Data Quality Report

Orbit 20221103_A12_025T09_9000005382_level2

Creation date: 2022-11-07T16:09:18.134552
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/AS1A12_025T09_9000005382cztM0_level2.fits modeM0/AS1A12_025T09_9000005382cztM0_level2_quad_clean.evt
Size (bytes)97,462,080107,838,720
Size92.9 MB 102.8 MB
Events in quadrant A590,498680,688
Events in quadrant B568,076681,860
Events in quadrant C579,308628,685
Events in quadrant D468,286529,017

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236870
B0258340
C0231990
D0467080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10765430.399443%
B107651020.947515%
C107651381.281932%
D10765119011.054343%

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 16504 10763 0 0 0.00% 0.00%
B 16504 10766 0 0 0.00% 0.00%
C 16504 10765 0 0 0.00% 0.00%
D 16504 10763 0 0 0.00% 0.00%

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 0 29 477 8.22 154 146 40.3
A 14 95 458 7.75 154 146 40.3
A 7 110 458 7.75 154 146 40.3
B 2 9 483 10.89 150 143 31.2
B 3 80 440 9.52 150 143 31.2
B 5 255 431 9.23 150 143 31.2
C 1 81 492 8.56 153 144 40.6
C 1 80 434 7.14 153 144 40.6
C 1 65 431 7.06 153 144 40.6
D 7 3 371 6.7 134 122 37.2
D 6 38 336 5.75 134 122 37.2
D 10 113 329 5.57 134 122 37.2

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