ASTROSAT CZTI

Data Quality Report

Orbit 56330

Creation date: 2026-02-25T09:26:57.814949
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_56330cztM0_level2.fits modeM0/AS1A14_049T01_9000006552_56330cztM0_level2_quad_clean.evt
Size (bytes)890,844,48071,026,560
Size849.6 MB 67.7 MB
Events in quadrant A7,942,668456,613
Events in quadrant B3,736,852661,995
Events in quadrant C3,997,894572,193
Events in quadrant D16,787,568111

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0281931
B0157981
C0167061
D0544061

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6586190028.849074%
B65871922.914832%
C65872994.539244%
D6587658699.984819%

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 7631 6587 1789 1789 23.44% 27.16%
B 7632 6588 87 87 1.14% 1.32%
C 7632 6588 228 228 2.99% 3.46%
D 7631 6586 5928 5928 77.68% 90.01%

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 11 31 3198576 20461.52 629 611 156.3
A 4 95 974925 6233.95 629 611 156.3
A 3 14 388019 2478.75 629 611 156.3
B 5 185 309372 2108.34 685 660 146.4
B 0 231 302498 2061.4 685 660 146.4
B 3 145 123565 839.38 685 660 146.4
C 13 3 872051 4795.99 663 656 181.7
C 12 252 309888 1701.95 663 656 181.7
C 15 198 88515 483.56 663 656 181.7
D 8 129 13600737 261916.58 175 167 51.9
D 12 3 2255418 43431.09 175 167 51.9
D 6 239 44473 853.23 175 167 51.9

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