ASTROSAT CZTI

Data Quality Report

Orbit 20170924_G07_057T03_9000001552_level2

Creation date: 2025-11-17T07:48:54.489541
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/AS1G07_057T03_9000001552cztM0_level2.fits modeM0/AS1G07_057T03_9000001552cztM0_level2_quad_clean.evt
Size (bytes)225,688,320238,893,120
Size215.2 MB 227.8 MB
Events in quadrant A1,382,5601,479,433
Events in quadrant B1,280,6281,357,243
Events in quadrant C1,404,2421,484,707
Events in quadrant D1,179,7961,326,433

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0610
B0610
C0610
D0610

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04700
B04700
C04700
D04700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0515460
B0732730
C0473060
D0678120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A230584922.133750%
B23058259411.249892%
C230581940.841357%
D2305810884.718536%

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 29123 23056 0 0 0.00% 0.00%
B 29123 23050 0 0 0.00% 0.00%
C 29123 23058 0 0 0.00% 0.00%
D 29123 23049 0 0 0.00% 0.00%

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 29 1314 10.78 360 341 90.2
A 7 110 1137 8.82 360 341 90.2
A 0 30 1057 7.93 360 341 90.2
B 2 9 1095 11.23 339 325 68.6
B 3 80 857 7.76 339 325 68.6
B 3 17 842 7.54 339 325 68.6
C 1 81 1019 6.87 370 348 97.7
C 1 80 987 6.54 370 348 97.7
C 12 241 957 6.23 370 348 97.7
D 6 231 861 6.16 336 308 89.7
D 7 3 853 6.07 336 308 89.7
D 10 189 841 5.94 336 308 89.7

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