ASTROSAT CZTI

Data Quality Report

Orbit 53721

Creation date: 2025-09-02T19:24:11.536628
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_022T04_9000006506_53721cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53721cztM0_level2_quad_clean.evt
Size (bytes)973,595,52079,306,560
Size928.5 MB 75.6 MB
Events in quadrant A17,244,56966,651
Events in quadrant B3,477,752710,241
Events in quadrant C7,694,573571,005
Events in quadrant D7,072,871558,554

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0561292
B0157780
C0278250
D0258630

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7101655192.254612%
B71011772.492607%
C7101101314.265596%
D710178010.984368%

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 7100 7100 5773 5773 81.31% 81.31%
B 7101 7101 37 37 0.52% 0.52%
C 7101 7101 847 847 11.93% 11.93%
D 7101 7101 768 768 10.82% 10.82%

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 3 63 10051923 98555.25 402 392 102.0
A 3 78 3756885 36832.41 402 392 102.0
A 8 245 1440414 14119.41 402 392 102.0
B 5 185 199489 1212.45 756 728 163.9
B 6 255 46319 278.11 756 728 163.9
B 4 216 37944 227.02 756 728 163.9
C 15 224 1972214 10136.95 703 696 194.5
C 15 158 1131564 5814.58 703 696 194.5
C 1 241 658164 3380.5 703 696 194.5
D 1 241 1731358 8366.56 725 693 206.9
D 8 176 959083 4633.15 725 693 206.9
D 2 172 707623 3417.51 725 693 206.9

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