ASTROSAT CZTI

Data Quality Report

Orbit 27765

Creation date: 2024-06-27T19:44:08.381561
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/AS1A09_038T47_9000004004_27765cztM0_level2.evt modeM0/AS1A09_038T47_9000004004_27765cztM0_level2_quad_clean.evt
Size (bytes)171,175,68031,288,320
Size163.2 MB 29.8 MB
Events in quadrant A743,149225,668
Events in quadrant B2,681,247179,265
Events in quadrant C768,290216,673
Events in quadrant D882,186209,221

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A032270
B090550
C032820
D036920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1567100.638162%
B156777549.457562%
C1567161.021059%
D1567412.616465%

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 1567 1567 0 0 0.00% 0.00%
B 1567 1567 612 612 39.06% 39.06%
C 1567 1567 0 0 0.00% 0.00%
D 1567 1567 38 38 2.43% 2.43%

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 8 192 5679 136.63 190 187 40.2
A 13 254 2987 69.66 190 187 40.2
A 3 137 1738 38.59 190 187 40.2
B 3 64 1966932 61212.69 161 158 32.1
B 10 245 51677 1603.45 161 158 32.1
B 0 190 11446 351.32 161 158 32.1
C 14 238 29714 668.01 181 183 44.2
C 3 233 26550 596.44 181 183 44.2
C 0 10 3329 71.16 181 183 44.2
D 1 52 100536 2287.22 178 173 43.9
D 2 250 67971 1545.08 178 173 43.9
D 2 120 8746 195.37 178 173 43.9

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