ASTROSAT CZTI

Data Quality Report

Orbit 53356

Creation date: 2025-08-09T05:13:10.453692
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_011T08_9000006492_53356cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53356cztM0_level2_quad_clean.evt
Size (bytes)747,495,36079,050,240
Size712.9 MB 75.4 MB
Events in quadrant A3,791,639630,532
Events in quadrant B4,485,880672,054
Events in quadrant C15,323,26150,010
Events in quadrant D3,556,394581,520

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161422
B0180882
C0499182
D0154302

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65852333.538345%
B65863305.010629%
C6586617193.698755%
D65861131.715761%

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 7600 6586 204 204 2.68% 3.10%
B 7601 6587 166 166 2.18% 2.52%
C 7601 6587 5834 5834 76.75% 88.57%
D 7601 6587 106 106 1.39% 1.61%

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 15 174 792134 4630.97 680 663 170.9
A 8 6 122760 714.4 680 663 170.9
A 3 14 67846 393.09 680 663 170.9
B 4 206 676945 4719.13 679 659 143.3
B 5 185 205193 1427.24 679 659 143.3
B 0 171 196890 1369.3 679 659 143.3
C 15 178 7071994 75147.31 339 335 94.1
C 15 158 4965043 52757.7 339 335 94.1
C 15 224 1397123 14843.03 339 335 94.1
D 3 12 304695 1566.09 674 644 194.1
D 2 249 202623 1040.34 674 644 194.1
D 2 62 80235 409.95 674 644 194.1

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