ASTROSAT CZTI

Data Quality Report

Orbit 53446

Creation date: 2025-08-15T08:06:56.969486
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_002T06_9000006496_53446cztM0_level2.fits modeM0/AS1A14_002T06_9000006496_53446cztM0_level2_quad_clean.evt
Size (bytes)916,099,200111,101,760
Size873.7 MB 106.0 MB
Events in quadrant A10,371,377647,410
Events in quadrant B6,747,026791,076
Events in quadrant C10,847,126631,461
Events in quadrant D5,294,744709,373

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0366025
B0261790
C0380850
D0219500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8411218425.965997%
B8412120014.265335%
C8412198023.537803%
D84123484.136947%

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 8411 8411 1842 1842 21.90% 21.90%
B 8412 8412 478 478 5.68% 5.68%
C 8412 8412 1500 1500 17.83% 17.83%
D 8412 8412 236 236 2.81% 2.81%

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 3 63 3485065 16608.53 846 825 209.8
A 15 174 3386795 16140.1 846 825 209.8
A 3 78 61638 289.88 846 825 209.8
B 4 171 1869327 9632.64 902 868 194.0
B 8 234 538947 2774.01 902 868 194.0
B 5 185 337992 1738.01 902 868 194.0
C 15 224 3596785 15469.49 855 846 232.5
C 15 158 1236802 5317.0 855 846 232.5
C 15 178 833928 3583.86 855 846 232.5
D 3 224 428436 1681.05 905 864 254.3
D 2 172 291028 1140.82 905 864 254.3
D 3 12 261581 1025.04 905 864 254.3

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