ASTROSAT CZTI

Data Quality Report

Orbit 40943

Creation date: 2024-06-27T22:22:32.127273
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_052T04_9000005582_40943cztM0_level2.fits modeM0/AS1A12_052T04_9000005582_40943cztM0_level2_quad_clean.evt
Size (bytes)370,082,88093,323,520
Size352.9 MB 89.0 MB
Events in quadrant A2,985,859634,688
Events in quadrant B2,699,096642,654
Events in quadrant C2,758,161611,029
Events in quadrant D4,802,758530,547

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124313
B0121262
C0119652
D0183582

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5822120.206115%
B5822190.326348%
C5822200.343525%
D58225269.034696%

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 7195 5823 3 3 0.04% 0.05%
B 7195 5823 10 10 0.14% 0.17%
C 7195 5823 19 19 0.26% 0.33%
D 7195 5823 489 489 6.80% 8.40%

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 532799 4155.88 625 612 128.1
A 13 248 17375 130.9 625 612 128.1
A 13 6 10731 79.02 625 612 128.1
B 0 229 128531 1060.74 620 603 120.6
B 5 255 77635 638.72 620 603 120.6
B 0 190 28803 233.82 620 603 120.6
C 15 214 272028 1897.58 610 614 143.0
C 0 10 93387 648.62 610 614 143.0
C 12 249 14675 98.31 610 614 143.0
D 13 249 1008339 7092.3 585 569 142.1
D 12 6 939233 6605.96 585 569 142.1
D 2 249 346447 2434.16 585 569 142.1

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