ASTROSAT CZTI

Data Quality Report

Orbit 54859

Creation date: 2025-11-18T11:12:03.111847
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_039T06_9000006526_54859cztM0_level2.fits modeM0/AS1A14_039T06_9000006526_54859cztM0_level2_quad_clean.evt
Size (bytes)1,222,205,760271,857,600
Size1.1 GB 259.3 MB
Events in quadrant A9,606,7441,773,986
Events in quadrant B9,807,6971,873,561
Events in quadrant C11,624,1151,673,341
Events in quadrant D12,684,9741,559,726

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04392533
B04426240
C04894855
D05258673

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03980
B03980
C03971
D03980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A196024482.285481%
B195986583.357485%
C195985933.025819%
D195999194.689015%

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 20829 19614 233 233 1.12% 1.19%
B 20830 19615 235 235 1.13% 1.20%
C 20830 19617 358 358 1.72% 1.82%
D 20830 19615 749 749 3.60% 3.82%

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 13 248 768564 1499.79 2071 2015 511.1
A 8 249 231945 449.87 2071 2015 511.1
A 8 206 155559 300.42 2071 2015 511.1
B 5 185 881390 2004.62 2033 1957 438.7
B 10 247 415476 942.59 2033 1957 438.7
B 5 236 131510 295.31 2033 1957 438.7
C 12 252 1708723 3092.84 2001 1983 551.8
C 15 209 608645 1099.35 2001 1983 551.8
C 14 254 557278 1006.27 2001 1983 551.8
D 11 176 1578497 2787.27 1979 1896 565.6
D 11 129 1008228 1779.09 1979 1896 565.6
D 10 181 701989 1237.69 1979 1896 565.6

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