ASTROSAT CZTI

Data Quality Report

Orbit 20958

Creation date: 2024-06-27T18:21:45.175583
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/AS1T03_131T01_9000003090_20958cztM0_level2.evt modeM0/AS1T03_131T01_9000003090_20958cztM0_level2_quad_clean.evt
Size (bytes)328,947,84057,830,400
Size313.7 MB 55.2 MB
Events in quadrant A2,181,158368,800
Events in quadrant B2,372,659380,438
Events in quadrant C2,269,695362,133
Events in quadrant D2,853,512344,554

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A088160
B094950
C090810
D0112400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4193260.620081%
B4193561.335559%
C4193661.574052%
D41931122.671119%

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 5498 4194 0 0 0.00% 0.00%
B 5498 4194 6 6 0.11% 0.14%
C 5498 4194 11 11 0.20% 0.26%
D 5498 4194 66 66 1.20% 1.57%

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 5 16 9881 81.9 564 555 113.9
A 0 226 4812 37.38 564 555 113.9
A 3 137 4390 33.68 564 555 113.9
B 7 220 110645 1031.1 566 553 106.8
B 0 190 18816 171.05 566 553 106.8
B 12 111 12349 110.48 566 553 106.8
C 14 238 85221 671.14 541 548 126.2
C 9 54 72330 568.96 541 548 126.2
C 13 61 3757 25.44 541 548 126.2
D 5 222 457129 3451.2 543 528 132.3
D 1 52 203180 1531.74 543 528 132.3
D 7 238 53214 398.23 543 528 132.3

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