ASTROSAT CZTI

Data Quality Report

Orbit 36533

Creation date: 2024-06-27T21:28:01.963222
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_089T02_9000005216_36533cztM0_level2.evt modeM0/AS1A11_089T02_9000005216_36533cztM0_level2_quad_clean.evt
Size (bytes)436,639,68059,535,360
Size416.4 MB 56.8 MB
Events in quadrant A2,849,061362,946
Events in quadrant B2,813,072363,583
Events in quadrant C3,654,752353,269
Events in quadrant D3,528,425333,074

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117993
B0117202
C0140712
D0141282

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5566150.269493%
B5566200.359324%
C55662795.012576%
D55661632.928494%

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 8972 5568 2 2 0.02% 0.04%
B 8972 5568 6 6 0.07% 0.11%
C 8972 5568 212 212 2.36% 3.81%
D 8972 5568 121 121 1.35% 2.17%

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 205722 1522.95 671 659 134.6
A 15 223 33297 242.39 671 659 134.6
A 9 143 11995 84.19 671 659 134.6
B 5 255 56900 443.57 665 647 126.8
B 5 172 33968 262.75 665 647 126.8
B 0 190 25584 196.64 665 647 126.8
C 14 254 596988 4049.44 633 639 147.3
C 0 10 346440 2348.12 633 639 147.3
C 15 214 233924 1584.1 633 639 147.3
D 12 16 362972 2305.88 641 623 157.1
D 12 227 144611 916.3 641 623 157.1
D 2 153 129293 818.82 641 623 157.1

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