ASTROSAT CZTI

Data Quality Report

Orbit 56638

Creation date: 2026-03-18T02:17:19.423362
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_083T06_9000006558_56638cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56638cztM0_level2_quad_clean.evt
Size (bytes)371,471,04091,641,600
Size354.3 MB 87.4 MB
Events in quadrant A3,513,279598,585
Events in quadrant B3,201,165651,152
Events in quadrant C3,348,242565,203
Events in quadrant D3,209,508531,103

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148901
B0136892
C0144561
D0139281

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61471812.944526%
B6147661.073694%
C6147961.561737%
D6147731.187571%

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 7342 6148 139 139 1.89% 2.26%
B 7342 6148 20 20 0.27% 0.33%
C 7342 6148 88 88 1.20% 1.43%
D 7342 6148 55 55 0.75% 0.89%

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 265016 1635.18 655 640 161.7
A 4 249 261869 1615.72 655 640 161.7
A 10 251 215345 1327.96 655 640 161.7
B 4 21 293506 2106.81 655 633 139.0
B 0 197 64840 461.88 655 633 139.0
B 10 247 55493 394.64 655 633 139.0
C 13 3 387408 2237.51 626 620 172.9
C 15 230 201693 1163.17 626 620 172.9
C 12 252 98892 568.49 626 620 172.9
D 3 12 189465 1075.27 620 591 175.7
D 6 239 157303 892.17 620 591 175.7
D 7 96 96216 544.4 620 591 175.7

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