ASTROSAT CZTI

Data Quality Report

Orbit 54183

Creation date: 2025-10-03T21:33:21.949298
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_012T01_9000006512_54183cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54183cztM0_level2_quad_clean.evt
Size (bytes)562,924,80077,702,400
Size536.8 MB 74.1 MB
Events in quadrant A4,622,021482,499
Events in quadrant B3,695,693575,029
Events in quadrant C8,037,997382,017
Events in quadrant D3,994,163473,848

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180522
B0152671
C0281751
D0163211

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62823816.064947%
B62821993.167781%
C6282183829.258198%
D62832634.185898%

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 7606 6438 257 257 3.38% 3.99%
B 7606 6552 95 95 1.25% 1.45%
C 7606 6551 1538 1538 20.22% 23.48%
D 7607 6553 216 216 2.84% 3.30%

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 1127674 6864.69 655 638 164.2
A 15 174 549605 3343.71 655 638 164.2
A 3 14 132821 805.12 655 638 164.2
B 5 236 485297 3488.18 651 627 138.9
B 5 185 181500 1301.75 651 627 138.9
B 15 20 150862 1081.24 651 627 138.9
C 15 177 4594778 30567.97 544 540 150.3
C 15 215 299189 1987.07 544 540 150.3
C 15 161 236357 1569.02 544 540 150.3
D 2 165 415405 2327.46 632 603 178.2
D 3 12 393439 2204.21 632 603 178.2
D 8 176 374366 2097.19 632 603 178.2

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