ASTROSAT CZTI

Data Quality Report

Orbit 53000

Creation date: 2025-07-16T11:26:19.103429
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/AS1A13_003T01_9000006486_53000cztM0_level2.fits modeM0/AS1A13_003T01_9000006486_53000cztM0_level2_quad_clean.evt
Size (bytes)3,689,922,240248,506,560
Size3.4 GB 237.0 MB
Events in quadrant A55,825,986533,448
Events in quadrant B13,611,3622,512,951
Events in quadrant C37,402,0721,200,477
Events in quadrant D27,858,4701,583,457

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01826149
B0574083
C012824517
D0997923

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04980
B04980
C04980
D04980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A245881976380.376606%
B245894601.870755%
C245871073243.649083%
D24589543122.087112%

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 26378 24588 17104 17104 64.84% 69.56%
B 26379 24592 88 88 0.33% 0.36%
C 26379 24591 9176 9176 34.79% 37.31%
D 26379 24592 4049 4049 15.35% 16.46%

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 9 191 38896187 103793.35 1495 1461 374.7
A 15 190 8350323 22279.53 1495 1461 374.7
A 7 206 869122 2315.42 1495 1461 374.7
B 10 254 1609743 2931.8 2591 2498 548.2
B 14 167 310931 562.62 2591 2498 548.2
B 4 81 243454 439.53 2591 2498 548.2
C 1 241 14312430 26134.96 1989 1972 547.6
C 9 38 7065852 12900.65 1989 1972 547.6
C 12 254 3686671 6729.31 1989 1972 547.6
D 2 62 9611432 14594.56 2270 2168 658.4
D 3 224 3040253 4614.25 2270 2168 658.4
D 8 176 2036942 3090.42 2270 2168 658.4

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