ASTROSAT CZTI

Data Quality Report

Orbit 34845

Creation date: 2022-03-09T12:36:13.260609
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/AS1C07_005T01_9000004992_34845cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34845cztM0_level2_quad_clean.evt
Size (bytes)675,486,72095,883,840
Size644.2 MB 91.4 MB
Events in quadrant A10,398,108512,778
Events in quadrant B3,179,939690,785
Events in quadrant C3,054,599680,092
Events in quadrant D3,468,725650,259

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0344973
B0128342
C0120472
D0137562

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5261353067.097510%
B52611482.813153%
C52611422.699107%
D52611011.919787%

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 7085 5261 2827 2827 39.90% 53.74%
B 7085 5262 87 87 1.23% 1.65%
C 7085 5262 96 96 1.35% 1.82%
D 7085 5262 119 119 1.68% 2.26%

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 15 169 8439586 85491.49 490 480 98.7
A 10 83 46634 467.56 490 480 98.7
A 7 3 8267 78.89 490 480 98.7
B 5 172 549548 4818.64 604 588 113.9
B 5 255 73973 644.16 604 588 113.9
B 4 171 54283 471.32 604 588 113.9
C 0 10 293646 2143.22 592 596 136.7
C 15 214 243633 1777.45 592 596 136.7
C 0 207 169656 1236.42 592 596 136.7
D 8 195 733442 4929.15 599 583 148.7
D 12 6 55198 367.34 599 583 148.7
D 2 250 54986 365.91 599 583 148.7

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