ASTROSAT CZTI

Data Quality Report

Orbit 57482

Creation date: 2026-05-13T21:13:23.110317
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_113T09_9000006574_57482cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57482cztM0_level2_quad_clean.evt
Size (bytes)400,596,48099,043,200
Size382.0 MB 94.5 MB
Events in quadrant A2,930,062652,585
Events in quadrant B3,553,150688,618
Events in quadrant C4,311,210608,114
Events in quadrant D3,517,550586,921

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136521
B0151081
C0176721
D0150891

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6641831.249812%
B66421512.273412%
C66422674.019874%
D66421081.626016%

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 7666 6641 2 2 0.03% 0.03%
B 7667 6642 46 46 0.60% 0.69%
C 7667 6643 204 204 2.66% 3.07%
D 7667 6643 62 62 0.81% 0.93%

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 14 22280 119.32 737 718 180.7
A 13 153 14466 76.08 737 718 180.7
A 4 3 12121 63.1 737 718 180.7
B 4 206 348679 2280.95 713 686 152.6
B 8 234 91509 595.31 713 686 152.6
B 5 185 47495 306.81 713 686 152.6
C 15 224 1078641 5691.98 693 686 189.4
C 14 254 196791 1035.5 693 686 189.4
C 6 223 95995 503.26 693 686 189.4
D 15 142 312092 1565.64 709 677 198.9
D 3 12 107039 534.74 709 677 198.9
D 2 62 68087 338.9 709 677 198.9

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