ASTROSAT CZTI

Data Quality Report

Orbit 02938

Creation date: 2024-06-27T14:22:27.631860
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/AS1P01_999T99_9000000414_02938cztM0_level2.evt modeM0/AS1P01_999T99_9000000414_02938cztM0_level2_quad_clean.evt
Size (bytes)560,468,16059,797,440
Size534.5 MB 57.0 MB
Events in quadrant A2,604,372389,577
Events in quadrant B3,380,940386,600
Events in quadrant C2,925,131363,355
Events in quadrant D7,703,728298,518

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113553
B0135082
C0124032
D0266012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5307160.301489%
B53071162.185792%
C53072013.787451%
D5307185935.029207%

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 14593 12451 4 4 0.03% 0.03%
B 14593 12353 59 59 0.40% 0.48%
C 14593 12435 148 148 1.01% 1.19%
D 14593 11974 1171 1171 8.02% 9.78%

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 13 164 107382 920.79 587 576 116.0
A 15 249 65579 560.4 587 576 116.0
A 12 113 41772 355.16 587 576 116.0
B 3 27 595023 5282.51 586 574 112.5
B 3 11 102596 906.61 586 574 112.5
B 5 70 98586 870.97 586 574 112.5
C 9 204 481794 3689.29 559 561 130.4
C 6 80 101180 771.38 559 561 130.4
C 8 162 23006 172.07 559 561 130.4
D 14 81 1345374 11073.9 487 476 121.4
D 15 50 1116088 9185.95 487 476 121.4
D 15 194 768629 6324.97 487 476 121.4

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
Veto Counter