ASTROSAT CZTI

Data Quality Report

Orbit 56434

Creation date: 2026-03-04T08:55:02.113006
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_083T05_9000006554_56434cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56434cztM0_level2_quad_clean.evt
Size (bytes)599,880,96082,252,800
Size572.1 MB 78.4 MB
Events in quadrant A8,491,614436,454
Events in quadrant B4,733,040563,010
Events in quadrant C4,011,493544,908
Events in quadrant D4,455,040483,114

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0298462
B0185852
C0165062
D0179992

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6632163724.683353%
B66325688.564536%
C66321912.879976%
D66323955.955971%

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 8074 6878 1627 1627 20.15% 23.66%
B 8074 6886 303 303 3.75% 4.40%
C 8074 6915 136 136 1.68% 1.97%
D 8074 6915 346 346 4.29% 5.00%

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 4 95 2638835 16537.18 645 629 159.5
A 12 3 2607395 16340.11 645 629 159.5
A 12 194 340488 2130.35 645 629 159.5
B 4 206 1713985 11496.72 707 683 149.0
B 0 231 56143 372.15 707 683 149.0
B 10 247 29033 190.24 707 683 149.0
C 12 254 687207 3535.1 709 703 194.2
C 1 16 157564 807.74 709 703 194.2
C 1 12 141731 726.21 709 703 194.2
D 8 160 449345 2315.61 687 654 193.8
D 3 12 343923 1771.55 687 654 193.8
D 12 4 304670 1568.97 687 654 193.8

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