ASTROSAT CZTI

Data Quality Report

Orbit 22997

Creation date: 2024-06-27T18:48:30.184201
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/AS1A08_004T03_9000003400_22997cztM0_level2.evt modeM0/AS1A08_004T03_9000003400_22997cztM0_level2_quad_clean.evt
Size (bytes)465,713,28094,570,560
Size444.1 MB 90.2 MB
Events in quadrant A3,134,722613,503
Events in quadrant B3,278,755627,828
Events in quadrant C3,208,352594,217
Events in quadrant D4,039,367573,682

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134682
B0138942
C0135672
D0164832

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6517190.291545%
B6517490.751880%
C6516630.966851%
D65161031.580724%

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 7662 6518 0 0 0.00% 0.00%
B 7662 6518 16 16 0.21% 0.25%
C 7661 6517 0 0 0.00% 0.00%
D 7661 6517 61 61 0.80% 0.94%

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 11 47 25316 151.44 806 788 162.0
A 13 254 10359 59.09 806 788 162.0
A 0 226 7018 38.46 806 788 162.0
B 4 216 64894 415.92 807 788 154.1
B 0 189 45915 292.78 807 788 154.1
B 12 111 18268 113.41 807 788 154.1
C 14 238 124803 678.76 780 789 182.7
C 0 10 24188 128.07 780 789 182.7
C 7 247 17533 91.64 780 789 182.7
D 1 52 417823 2203.08 781 759 189.3
D 2 152 217305 1143.87 781 759 189.3
D 10 230 134668 707.35 781 759 189.3

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