ASTROSAT CZTI

Data Quality Report

Orbit 53916

Creation date: 2025-09-16T00:03:34.986868
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_057T04_9000006508_53916cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53916cztM0_level2_quad_clean.evt
Size (bytes)692,948,16071,628,480
Size660.8 MB 68.3 MB
Events in quadrant A2,899,278591,581
Events in quadrant B3,609,011611,234
Events in quadrant C6,069,142448,342
Events in quadrant D12,598,20191,452

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131831
B0149651
C0222831
D0416071

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6101991.622685%
B61011983.245370%
C6102125920.632579%
D6101519285.100803%

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 7001 6101 59 59 0.84% 0.97%
B 7001 6101 140 140 2.00% 2.29%
C 7002 6103 1243 1243 17.75% 20.37%
D 7000 6100 3893 3893 55.61% 63.82%

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 15 174 199427 1222.19 656 639 162.6
A 0 8 54073 328.52 656 639 162.6
A 4 249 30464 183.37 656 639 162.6
B 0 213 439668 3192.84 643 621 137.5
B 5 236 144108 1043.47 643 621 137.5
B 5 185 141503 1024.52 643 621 137.5
C 1 241 2276070 14694.44 555 549 154.9
C 13 3 1298319 8380.5 555 549 154.9
C 12 2 52303 334.21 555 549 154.9
D 8 176 11190916 166488.42 228 218 67.2
D 3 12 188310 2798.32 228 218 67.2
D 8 160 59086 875.8 228 218 67.2

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