ASTROSAT CZTI

Data Quality Report

Orbit 36591

Creation date: 2024-06-27T21:28:50.966598
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/AS1A11_097T24_9000005224_36591cztM0_level2.evt modeM0/AS1A11_097T24_9000005224_36591cztM0_level2_quad_clean.evt
Size (bytes)412,191,36065,701,440
Size393.1 MB 62.7 MB
Events in quadrant A2,703,651418,696
Events in quadrant B2,607,329427,304
Events in quadrant C3,672,544381,293
Events in quadrant D3,135,070386,525

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113123
B0110662
C0141602
D0130462

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5368170.316692%
B5368160.298063%
C53683125.812221%
D5368631.173621%

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 7161 5369 2 2 0.03% 0.04%
B 7161 5369 7 7 0.10% 0.13%
C 7161 5369 278 278 3.88% 5.18%
D 7161 5369 49 49 0.68% 0.91%

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 10 83 197414 1545.4 634 624 127.3
A 15 223 25863 198.2 634 624 127.3
A 9 143 13504 101.15 634 624 127.3
B 5 255 64003 521.84 627 610 121.5
B 0 199 37637 304.8 627 610 121.5
B 0 213 18815 149.86 627 610 121.5
C 14 254 859948 6291.05 588 594 136.6
C 0 10 274895 2008.07 588 594 136.6
C 15 214 227197 1658.89 588 594 136.6
D 13 249 153742 1047.18 605 589 146.3
D 2 250 148751 1013.05 605 589 146.3
D 13 171 106089 721.35 605 589 146.3

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