ASTROSAT CZTI

Data Quality Report

Orbit 31590

Creation date: 2024-06-27T20:30:26.656855
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/AS1C06_002T03_9000004610_31590cztM0_level2.evt modeM0/AS1C06_002T03_9000004610_31590cztM0_level2_quad_clean.evt
Size (bytes)477,204,480101,831,040
Size455.1 MB 97.1 MB
Events in quadrant A2,620,549698,927
Events in quadrant B4,358,639681,546
Events in quadrant C3,077,002672,634
Events in quadrant D4,025,498648,573

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134061919
B0202363359
C0148812207
D0193573403

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013519
B013614
C013420
D013519

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B051
C051
D062

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55052274.123524%
B53854217.818013%
C54583506.412605%
D54022294.239171%

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 9417 5651 0 0 0.00% 0.00%
B 9417 5559 5 5 0.05% 0.09%
C 9417 5614 10 10 0.11% 0.18%
D 9417 5574 30 30 0.32% 0.54%

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 9577 65.0 678 661 137.2
A 3 137 7217 47.79 678 661 137.2
A 0 226 5734 36.98 678 661 137.2
B 6 159 1437901 11396.43 652 635 126.1
B 4 80 266424 2107.51 652 635 126.1
B 12 1 39938 311.64 652 635 126.1
C 3 233 344842 2302.04 634 634 149.5
C 14 238 141185 939.99 634 634 149.5
C 14 254 55684 368.17 634 634 149.5
D 8 195 1303066 8521.74 634 614 152.8
D 12 218 174596 1138.34 634 614 152.8
D 10 203 51620 333.72 634 614 152.8

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