ASTROSAT CZTI

Data Quality Report

Orbit 53747

Creation date: 2025-09-04T14:17:11.589364
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/AS1A14_022T04_9000006506_53747cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53747cztM0_level2_quad_clean.evt
Size (bytes)970,865,28071,801,280
Size925.9 MB 68.5 MB
Events in quadrant A15,985,00479,449
Events in quadrant B3,683,952671,513
Events in quadrant C8,805,172483,380
Events in quadrant D6,958,485483,612

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0521052
B0155992
C0306512
D0251662

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6537587089.796543%
B65373154.818724%
C6537176426.984855%
D6537125719.229004%

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 7636 6536 5721 5721 74.92% 87.53%
B 7637 6537 114 114 1.49% 1.74%
C 7637 6538 1555 1555 20.36% 23.78%
D 7637 6538 1062 1062 13.91% 16.24%

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 3 63 13575075 222460.91 235 229 61.0
A 3 78 1061347 17389.32 235 229 61.0
A 4 249 242952 3977.68 235 229 61.0
B 6 255 493508 3261.43 707 682 151.1
B 5 185 220934 1457.59 707 682 151.1
B 0 213 38373 249.43 707 682 151.1
C 15 224 3777425 22136.53 615 611 170.6
C 1 241 2064248 12095.32 615 611 170.6
C 12 252 91642 533.55 615 611 170.6
D 8 176 2081573 11692.48 631 601 178.0
D 2 172 909304 5105.78 631 601 178.0
D 7 30 692669 3888.56 631 601 178.0

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