ASTROSAT CZTI

Data Quality Report

Orbit 25257

Creation date: 2024-06-27T19:15:35.894026
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/AS1A09_027T01_9000003694_25257cztM0_level2.evt modeM0/AS1A09_027T01_9000003694_25257cztM0_level2_quad_clean.evt
Size (bytes)754,940,160125,193,600
Size720.0 MB 119.4 MB
Events in quadrant A3,347,918908,602
Events in quadrant B3,479,153902,006
Events in quadrant C4,140,131845,788
Events in quadrant D11,466,669690,478

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139760
B0143800
C0164320
D0384780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6357661.038226%
B6358891.399811%
C63582273.570305%
D6357298346.924650%

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 7612 6358 0 0 0.00% 0.00%
B 7613 6359 8 8 0.11% 0.13%
C 7613 6359 68 68 0.89% 1.07%
D 7612 6358 2733 2733 35.90% 42.99%

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 28603 163.15 859 844 170.1
A 13 254 10870 58.93 859 844 170.1
A 0 226 7584 39.61 859 844 170.1
B 0 190 54968 352.1 839 818 153.8
B 0 229 49317 315.36 839 818 153.8
B 15 33 34637 219.9 839 818 153.8
C 2 16 657682 3554.92 806 812 184.8
C 3 233 132499 712.68 806 812 184.8
C 14 238 130542 702.09 806 812 184.8
D 1 239 4726627 27690.39 721 702 170.7
D 9 35 2234882 13090.63 721 702 170.7
D 8 195 1331129 7795.31 721 702 170.7

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