ASTROSAT CZTI

Data Quality Report

Orbit 52266

Creation date: 2025-07-21T20:09:32.851995
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_011T05_9000006474_52266cztM0_level2.fits modeM0/AS1C09_011T05_9000006474_52266cztM0_level2_quad_clean.evt
Size (bytes)762,099,84074,237,760
Size726.8 MB 70.8 MB
Events in quadrant A3,821,195576,620
Events in quadrant B7,303,615536,782
Events in quadrant C12,207,879182,967
Events in quadrant D4,395,976517,652

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156772
B0260351
C0405117
D0174051

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62102964.766506%
B6210127520.531401%
C6210452572.866345%
D62102574.138486%

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 7256 6212 177 177 2.44% 2.85%
B 7256 6212 804 804 11.08% 12.94%
C 7255 6211 3501 3501 48.26% 56.37%
D 7255 6211 205 205 2.83% 3.30%

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 4 249 370862 2318.82 643 628 159.7
A 13 248 246435 1539.52 643 628 159.7
A 15 174 129458 806.88 643 628 159.7
B 12 32 1778314 14221.88 589 571 125.0
B 10 254 1697470 13575.13 589 571 125.0
B 0 216 329780 2633.66 589 571 125.0
C 15 158 7573680 73430.36 373 370 103.1
C 15 224 2013288 19517.13 373 370 103.1
C 15 159 202225 1957.17 373 370 103.1
D 8 176 846353 4790.57 622 594 176.5
D 11 176 330873 1870.78 622 594 176.5
D 12 128 147161 830.19 622 594 176.5

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