ASTROSAT CZTI

Data Quality Report

Orbit 50653

Creation date: 2025-02-08T05:41:28.194563
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/AS1T05_241T01_9000006446_50653cztM0_level2.fits modeM0/AS1T05_241T01_9000006446_50653cztM0_level2_quad_clean.evt
Size (bytes)527,624,64092,903,040
Size503.2 MB 88.6 MB
Events in quadrant A4,710,576605,161
Events in quadrant B4,819,319644,915
Events in quadrant C5,696,302584,008
Events in quadrant D3,822,981545,027

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181812
B0187352
C0212883
D0158652

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62191933.103393%
B62194397.059013%
C62183275.258926%
D62182473.972338%

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 7444 6220 125 125 1.68% 2.01%
B 7444 6220 275 275 3.69% 4.42%
C 7443 6219 234 234 3.14% 3.76%
D 7443 6219 163 163 2.19% 2.62%

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 4 979657 5934.16 665 647 165.0
A 6 161 271630 1642.53 665 647 165.0
A 4 3 143294 864.64 665 647 165.0
B 4 170 996067 7101.73 660 636 140.2
B 3 249 370023 2635.33 660 636 140.2
B 5 172 157419 1118.54 660 636 140.2
C 15 1 1457870 7922.47 658 653 183.9
C 15 174 421396 2287.46 658 653 183.9
C 13 3 320588 1739.4 658 653 183.9
D 7 110 217150 1209.62 646 622 179.0
D 8 246 159289 886.39 646 622 179.0
D 2 249 153445 853.74 646 622 179.0

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