ASTROSAT CZTI

Data Quality Report

Orbit 31973

Creation date: 2024-06-27T20:34:45.725841
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/AS1A10_053T10_9000004670_31973cztM0_level2.evt modeM0/AS1A10_053T10_9000004670_31973cztM0_level2_quad_clean.evt
Size (bytes)517,132,80064,733,760
Size493.2 MB 61.7 MB
Events in quadrant A2,657,405418,693
Events in quadrant B4,172,065423,219
Events in quadrant C5,134,370357,997
Events in quadrant D3,350,403400,494

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011926865
B0173071347
C0203651597
D0144771134

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011210
B01128
C01137
D011410

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0229
C0152
D0131

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5148320.621601%
B51211062.069908%
C511292218.035994%
D5132711.383476%

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 7532 5187 0 0 0.00% 0.00%
B 7530 5151 14 14 0.19% 0.27%
C 7524 5136 574 574 7.63% 11.18%
D 7528 5166 23 23 0.31% 0.45%

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 13 254 7776 52.03 688 677 136.4
A 3 137 6410 42.02 688 677 136.4
A 0 226 5692 36.76 688 677 136.4
B 6 159 1401124 10989.54 682 667 127.4
B 10 245 72446 563.26 682 667 127.4
B 12 111 15233 114.3 682 667 127.4
C 0 10 2423205 16314.41 637 643 148.5
C 3 233 106634 713.78 637 643 148.5
C 14 238 103166 690.43 637 643 148.5
D 11 164 290440 1802.22 680 665 160.8
D 8 195 258765 1605.22 680 665 160.8
D 12 218 203285 1260.17 680 665 160.8

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