ASTROSAT CZTI

Data Quality Report

Orbit 55358

Creation date: 2025-12-21T23:33:25.184901
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_009T01_9000006534_55358cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55358cztM0_level2_quad_clean.evt
Size (bytes)383,656,320101,805,120
Size365.9 MB 97.1 MB
Events in quadrant A3,108,958668,197
Events in quadrant B3,123,517712,198
Events in quadrant C3,508,124639,008
Events in quadrant D3,948,247604,121

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140552
B0140342
C0151222
D0163112

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6593771.167905%
B6593681.031397%
C6592630.955704%
D65921141.729369%

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 7753 6594 16 16 0.21% 0.24%
B 7753 6594 3 3 0.04% 0.05%
C 7752 6593 21 21 0.27% 0.32%
D 7752 6593 73 73 0.94% 1.11%

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 0 8 100708 560.67 725 706 178.4
A 4 249 78252 434.77 725 706 178.4
A 6 161 31739 173.99 725 706 178.4
B 9 254 109511 710.65 712 685 153.1
B 0 199 84371 546.48 712 685 153.1
B 5 185 63041 407.19 712 685 153.1
C 12 252 321805 1660.3 702 694 193.4
C 9 38 147964 761.46 702 694 193.4
C 13 3 84606 433.87 702 694 193.4
D 11 129 841951 4271.26 705 673 197.0
D 10 181 175732 888.79 705 673 197.0
D 5 173 50815 254.58 705 673 197.0

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