ASTROSAT CZTI

Data Quality Report

Orbit 43631

Creation date: 2024-06-27T22:53:51.724090
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/AS1A12_095T02_9000005892_43631cztM0_level2.fits modeM0/AS1A12_095T02_9000005892_43631cztM0_level2_quad_clean.evt
Size (bytes)832,674,24095,843,520
Size794.1 MB 91.4 MB
Events in quadrant A5,454,326699,238
Events in quadrant B3,537,303718,379
Events in quadrant C11,806,735529,233
Events in quadrant D9,551,873525,425

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0207381
B0144521
C0392771
D0326563

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61183866.309251%
B61181091.781628%
C6118325153.138280%
D6117226937.093346%

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 7188 6118 157 157 2.18% 2.57%
B 7188 6118 37 37 0.51% 0.60%
C 7187 6117 3224 3224 44.86% 52.71%
D 7187 6117 1989 1989 27.67% 32.52%

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 14 63 896318 6174.08 706 694 145.1
A 10 83 732353 5043.77 706 694 145.1
A 0 228 403208 2774.77 706 694 145.1
B 5 235 281953 2003.39 710 690 140.4
B 12 32 81376 574.71 710 690 140.4
B 3 42 66200 466.62 710 690 140.4
C 15 142 5199123 40328.95 546 550 128.9
C 15 174 2159335 16747.2 546 550 128.9
C 15 157 895133 6939.9 546 550 128.9
D 4 212 895817 5772.54 596 577 155.1
D 4 216 785849 5063.46 596 577 155.1
D 5 222 740211 4769.18 596 577 155.1

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