ASTROSAT CZTI

Data Quality Report

Orbit 07251

Creation date: 2024-06-27T15:17:21.631512
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/AS1G05_246T03_9000000990_07251cztM0_level2.evt modeM0/AS1G05_246T03_9000000990_07251cztM0_level2_quad_clean.evt
Size (bytes)418,063,680102,755,520
Size398.7 MB 98.0 MB
Events in quadrant A2,948,835668,473
Events in quadrant B3,046,802695,175
Events in quadrant C2,924,154682,749
Events in quadrant D3,325,120638,394

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129183
B0130882
C0128452
D0143842

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6122490.800392%
B6122350.571709%
C6122110.179680%
D6122721.176086%

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 7492 6123 8 8 0.11% 0.13%
B 7492 6123 2 2 0.03% 0.03%
C 7492 6123 0 0 0.00% 0.00%
D 7492 6123 49 49 0.65% 0.80%

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 14 111 75741 503.82 740 724 148.9
A 8 15 15498 99.22 740 724 148.9
A 13 248 9851 61.3 740 724 148.9
B 0 214 44635 307.04 758 741 143.0
B 4 81 23189 157.02 758 741 143.0
B 0 219 17569 117.71 758 741 143.0
C 9 243 45781 266.88 733 735 168.8
C 9 68 10221 56.2 733 735 168.8
C 10 22 6334 33.17 733 735 168.8
D 2 14 167617 955.71 717 696 174.7
D 13 169 143841 819.58 717 696 174.7
D 2 33 134854 768.13 717 696 174.7

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