ASTROSAT CZTI

Data Quality Report

Orbit 37558

Creation date: 2024-06-27T21:41:29.776479
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/AS1T05_051T01_9000005334_37558cztM0_level2.evt modeM0/AS1T05_051T01_9000005334_37558cztM0_level2_quad_clean.evt
Size (bytes)571,933,440100,653,120
Size545.4 MB 96.0 MB
Events in quadrant A5,430,899640,102
Events in quadrant B3,606,964664,050
Events in quadrant C3,398,549668,633
Events in quadrant D4,441,487618,980

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0203502
B0147662
C0139472
D0174912

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65403004.587156%
B65401191.819572%
C6540400.611621%
D65402333.562691%

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 7853 6541 294 294 3.74% 4.49%
B 7853 6541 90 90 1.15% 1.38%
C 7853 6541 26 26 0.33% 0.40%
D 7853 6541 216 216 2.75% 3.30%

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 15 222 2105489 13993.52 744 730 150.4
A 10 83 346731 2300.39 744 730 150.4
A 9 143 34651 225.52 744 730 150.4
B 5 172 186191 1302.71 742 724 142.4
B 5 200 119056 831.16 742 724 142.4
B 0 213 98345 685.68 742 724 142.4
C 15 214 300484 1753.84 730 735 170.9
C 0 10 95095 552.1 730 735 170.9
C 15 208 65269 377.59 730 735 170.9
D 13 249 478588 2708.47 723 703 176.4
D 2 249 435635 2465.03 723 703 176.4
D 5 222 191882 1083.53 723 703 176.4

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