ASTROSAT CZTI

Data Quality Report

Orbit 56304

Creation date: 2026-02-23T16:39:25.815809
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_049T01_9000006552_56304cztM0_level2.fits modeM0/AS1A14_049T01_9000006552_56304cztM0_level2_quad_clean.evt
Size (bytes)791,591,04082,379,520
Size754.9 MB 78.6 MB
Events in quadrant A15,584,391131,482
Events in quadrant B5,159,100681,842
Events in quadrant C4,330,827622,824
Events in quadrant D3,705,859589,766

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0509487
B0197082
C0175732
D0156402

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6722566284.230884%
B67225478.137459%
C67223725.534067%
D67232183.242600%

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 8987 6725 5365 5365 59.70% 79.78%
B 8987 6725 246 246 2.74% 3.66%
C 8987 6725 175 175 1.95% 2.60%
D 8988 6726 44 44 0.49% 0.65%

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 32 6227893 57511.17 438 425 108.3
A 7 64 3083348 28471.04 438 425 108.3
A 4 95 3053072 28191.44 438 425 108.3
B 5 172 1350538 8524.38 739 712 158.3
B 5 185 555112 3501.13 739 712 158.3
B 0 183 141927 891.8 739 712 158.3
C 5 250 785930 3925.89 740 735 200.0
C 12 252 171251 852.56 740 735 200.0
C 12 249 113526 563.94 740 735 200.0
D 2 249 178763 852.35 744 712 208.9
D 14 52 121453 578.0 744 712 208.9
D 2 120 91049 432.45 744 712 208.9

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