ASTROSAT CZTI

Data Quality Report

Orbit 35404

Creation date: 2022-09-12T18:20:07.251215
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/AS1T05_022T01_9000005070_35404cztM0_level2.evt modeM0/AS1T05_022T01_9000005070_35404cztM0_level2_quad_clean.evt
Size (bytes)585,138,24079,816,320
Size558.0 MB 76.1 MB
Events in quadrant A2,571,040537,763
Events in quadrant B5,360,886535,594
Events in quadrant C3,054,196535,699
Events in quadrant D6,379,398439,576

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109633
B0194442
C0120602
D0225542

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5249120.228615%
B524984716.136407%
C52491292.457611%
D5249124723.756906%

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 7043 5250 2 2 0.03% 0.04%
B 7043 5250 646 646 9.17% 12.30%
C 7043 5250 95 95 1.35% 1.81%
D 7043 5250 1019 1019 14.47% 19.41%

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 123875 971.12 627 614 126.9
A 9 143 11973 89.49 627 614 126.9
A 13 6 11254 83.83 627 614 126.9
B 4 251 1634643 14537.81 587 572 112.4
B 5 14 315074 2798.02 587 572 112.4
B 5 31 312745 2777.3 587 572 112.4
C 0 10 376911 2619.56 615 622 143.6
C 15 214 214496 1488.9 615 622 143.6
C 0 207 29344 199.95 615 622 143.6
D 7 80 3418307 25326.29 541 526 134.9
D 1 47 299293 2213.91 541 526 134.9
D 13 249 215656 1594.15 541 526 134.9

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