ASTROSAT CZTI

Data Quality Report

Orbit 09253

Creation date: 2024-06-27T15:43:32.097876
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/AS1A03_091T04_9000001294_09253cztM0_level2.evt modeM0/AS1A03_091T04_9000001294_09253cztM0_level2_quad_clean.evt
Size (bytes)67,328,6406,909,120
Size64.2 MB 6.6 MB
Events in quadrant A516,47933,105
Events in quadrant B500,76133,381
Events in quadrant C476,43333,251
Events in quadrant D474,91333,096

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060553972
B057563681
C056923654
D059803892

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05632
B05634
C05626
D05622

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C021
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A964747.676349%
B954717.442348%
C965636.528497%
D966666.832298%

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 2764 1363 0 0 0.00% 0.00%
B 2762 1372 0 0 0.00% 0.00%
C 2764 1378 0 0 0.00% 0.00%
D 2761 1394 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 8 5 37917 1372.46 121 118 27.5
A 15 174 4455 157.47 121 118 27.5
A 1 162 3400 119.17 121 118 27.5
B 0 219 6953 258.87 122 119 26.4
B 0 214 6607 245.77 122 119 26.4
B 0 213 4237 155.99 122 119 26.4
C 14 234 1893 57.94 120 121 30.6
C 8 128 1509 45.39 120 121 30.6
C 13 61 904 25.6 120 121 30.6
D 2 136 12101 364.58 117 113 32.9
D 7 71 8940 268.45 117 113 32.9
D 1 52 4085 120.8 117 113 32.9

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