ASTROSAT CZTI

Data Quality Report

Orbit 58961

Creation date: 2026-08-21T11:41:30.497189
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_004T07_9000006598_58961cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58961cztM0_level2_quad_clean.evt
Size (bytes)458,674,560100,679,040
Size437.4 MB 96.0 MB
Events in quadrant A3,959,216662,380
Events in quadrant B3,827,984702,797
Events in quadrant C3,778,764638,233
Events in quadrant D4,891,412577,165

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164152
B0160172
C0160482
D0191612

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67131091.623715%
B67131892.815433%
C6713901.340682%
D67122954.395113%

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 7823 6714 54 54 0.69% 0.80%
B 7823 6714 112 112 1.43% 1.67%
C 7823 6714 94 94 1.20% 1.40%
D 7822 6713 268 268 3.43% 3.99%

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 14 238 618919 3385.57 740 723 182.6
A 15 233 353580 1932.43 740 723 182.6
A 3 14 44587 240.22 740 723 182.6
B 2 249 192917 1231.35 733 707 156.1
B 4 236 143989 917.9 733 707 156.1
B 6 255 131602 838.55 733 707 156.1
C 12 252 779722 3917.32 723 713 198.9
C 3 233 70333 350.09 723 713 198.9
C 12 249 55098 273.48 723 713 198.9
D 12 110 781684 3866.39 703 670 202.0
D 7 222 507483 2508.97 703 670 202.0
D 12 248 365273 1804.96 703 670 202.0

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

TCT plots

Parameter TCT0 TCT_healed
Tct