ASTROSAT CZTI

Data Quality Report

Orbit 37305

Creation date: 2024-06-27T21:38:12.572608
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/AS1A10_094T23_9000005304_37305cztM0_level2.evt modeM0/AS1A10_094T23_9000005304_37305cztM0_level2_quad_clean.evt
Size (bytes)303,995,52080,899,200
Size289.9 MB 77.2 MB
Events in quadrant A2,079,972541,215
Events in quadrant B2,417,286535,131
Events in quadrant C2,086,147557,626
Events in quadrant D2,344,356528,055

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A086261
B097781
C086001
D096581

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4082110.269476%
B40821854.532092%
C4082190.465458%
D4082932.278295%

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 4082 4082 6 6 0.15% 0.15%
B 4082 4082 102 102 2.50% 2.50%
C 4082 4082 16 16 0.39% 0.39%
D 4082 4082 70 70 1.71% 1.71%

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 178899 1878.48 471 464 95.0
A 13 248 44040 458.75 471 464 95.0
A 9 143 13702 139.36 471 464 95.0
B 12 18 264490 3059.78 455 443 86.3
B 5 255 155521 1797.05 455 443 86.3
B 0 213 78613 905.83 455 443 86.3
C 15 214 167870 1568.2 461 464 106.8
C 0 10 97711 910.97 461 464 106.8
C 15 208 12106 109.06 461 464 106.8
D 2 249 394935 3518.72 461 448 112.1
D 10 199 49568 438.14 461 448 112.1
D 2 153 44071 389.11 461 448 112.1

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