ASTROSAT CZTI

Data Quality Report

Orbit 53171

Creation date: 2025-07-28T14:08:42.992191
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/AS1C09_011T06_9000006490_53171cztM0_level2.fits modeM0/AS1C09_011T06_9000006490_53171cztM0_level2_quad_clean.evt
Size (bytes)1,043,539,20083,842,560
Size995.2 MB 80.0 MB
Events in quadrant A6,190,901664,556
Events in quadrant B4,901,937731,407
Events in quadrant C7,769,741590,375
Events in quadrant D19,176,94022,705

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236150
B0199040
C0283790
D0622320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76075076.664914%
B76072953.878007%
C7608106614.011567%
D7608740997.384332%

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 7607 7607 480 480 6.31% 6.31%
B 7607 7607 192 192 2.52% 2.52%
C 7608 7608 969 969 12.74% 12.74%
D 7608 7608 7002 7002 92.03% 92.03%

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 12 3 1328039 7056.57 759 739 188.1
A 8 249 428231 2272.76 759 739 188.1
A 4 249 413353 2193.66 759 739 188.1
B 10 191 1088955 6804.24 759 734 159.9
B 2 249 254663 1587.72 759 734 159.9
B 1 239 158388 985.75 759 734 159.9
C 1 241 1396727 7148.29 705 695 195.3
C 15 224 1285125 6576.84 705 695 195.3
C 4 5 824044 4215.9 705 695 195.3
D 15 125 17962576 271826.22 228 218 66.1
D 2 153 46181 695.56 228 218 66.1
D 2 249 42220 635.62 228 218 66.1

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