ASTROSAT CZTI

Data Quality Report

Orbit 54109

Creation date: 2025-09-29T11:13:00.277195
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_012T01_9000006512_54109cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54109cztM0_level2_quad_clean.evt
Size (bytes)473,414,40089,677,440
Size451.5 MB 85.5 MB
Events in quadrant A2,997,648611,259
Events in quadrant B4,763,417633,260
Events in quadrant C4,973,587523,785
Events in quadrant D4,310,238516,930

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134021
B0183341
C0192261
D0170851

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61641382.238806%
B61654647.526358%
C616579112.830495%
D61654206.812652%

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 7294 6165 48 48 0.66% 0.78%
B 7295 6166 289 289 3.96% 4.69%
C 7295 6166 672 672 9.21% 10.90%
D 7295 6166 298 298 4.08% 4.83%

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 150363 920.13 659 643 162.7
A 13 248 57530 349.61 659 643 162.7
A 0 8 48975 297.03 659 643 162.7
B 4 81 1220359 8943.93 642 621 136.4
B 0 213 312822 2289.27 642 621 136.4
B 10 245 230707 1687.14 642 621 136.4
C 1 241 1233334 7276.13 608 600 169.4
C 13 3 1048803 6186.94 608 600 169.4
C 9 53 88874 521.03 608 600 169.4
D 8 176 986705 5631.25 617 591 175.1
D 2 165 464607 2649.78 617 591 175.1
D 2 172 226647 1290.9 617 591 175.1

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