ASTROSAT CZTI

Data Quality Report

Orbit 36174

Creation date: 2022-06-28T12:37:46.846425
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_009T05_9000005162_36174cztM0_level2.evt modeM0/AS1T05_009T05_9000005162_36174cztM0_level2_quad_clean.evt
Size (bytes)246,430,08062,017,920
Size235.0 MB 59.1 MB
Events in quadrant A1,420,471416,097
Events in quadrant B1,896,724422,003
Events in quadrant C2,198,018423,266
Events in quadrant D1,741,825402,168

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A062541
B076611
C083941
D072341

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A301060.199336%
B3010943.122924%
C30101735.747508%
D3010531.760797%

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 3010 3010 0 0 0.00% 0.00%
B 3010 3010 65 65 2.16% 2.16%
C 3010 3010 166 166 5.51% 5.51%
D 3010 3010 43 43 1.43% 1.43%

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 10 83 90691 1299.49 340 334 69.5
A 9 143 6939 94.99 340 334 69.5
A 13 254 5639 76.3 340 334 69.5
B 5 172 363567 5571.78 342 335 65.2
B 4 171 127111 1944.67 342 335 65.2
B 0 190 29571 448.46 342 335 65.2
C 15 208 482300 6219.2 335 337 77.5
C 15 214 132875 1710.26 335 337 77.5
C 1 23 125542 1615.63 335 337 77.5
D 13 249 187011 2336.05 330 322 79.9
D 12 6 105349 1314.21 330 322 79.9
D 13 171 59935 745.94 330 322 79.9

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