ASTROSAT CZTI

Data Quality Report

Orbit 20250820_A14_004T05_9000006502_level2

Creation date: 2025-08-28T22:58:05.214904
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_004T05_9000006502cztM0_level2.fits modeM0/AS1A14_004T05_9000006502cztM0_level2_quad_clean.evt
Size (bytes)3,932,375,0401,498,348,800
Size3.7 GB 1.4 GB
Events in quadrant A22,305,7182,596,524
Events in quadrant B23,974,2163,466,239
Events in quadrant C19,680,4761,982,360
Events in quadrant D17,372,6481,795,559

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06230
B06230
C06230
D06230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105240
B0105240
C0105240
D0105240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022810790
B015335710
C025635960
D022989570

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51832915328029.571951%
B518328453228.743884%
C51832918633235.948596%
D51832715964730.800441%

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 599707 516312 0 0 0.00% 0.00%
B 599707 517722 0 0 0.00% 0.00%
C 599707 506731 0 0 0.00% 0.00%
D 599707 476813 0 0 0.00% 0.00%

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 14 188 25156 10.12 5880 5425 1949.5
A 9 255 23173 9.1 5880 5425 1949.5
A 14 204 20255 7.61 5880 5425 1949.5
B 2 9 27471 14.41 6370 6018 1488.6
B 2 8 24758 12.59 6370 6018 1488.6
B 3 25 19721 9.21 6370 6018 1488.6
C 15 175 16402 6.4 5287 4811 1809.7
C 15 255 15704 6.02 5287 4811 1809.7
C 2 31 15444 5.88 5287 4811 1809.7
D 6 218 22274 10.62 4994 4422 1681.3
D 15 11 16990 7.47 4994 4422 1681.3
D 3 30 15778 6.75 4994 4422 1681.3

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