ASTROSAT CZTI

Data Quality Report

Orbit 28744

Creation date: 2024-06-27T19:55:42.787289
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_123T08_9000004126_28744cztM0_level2.evt modeM0/AS1A10_123T08_9000004126_28744cztM0_level2_quad_clean.evt
Size (bytes)561,916,800102,438,720
Size535.9 MB 97.7 MB
Events in quadrant A3,064,463671,483
Events in quadrant B3,578,952687,349
Events in quadrant C5,126,839655,001
Events in quadrant D4,801,950630,028

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134811
B0149511
C0195791
D0188961

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6572180.273889%
B6573831.262742%
C65735878.930473%
D65732383.620873%

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 7692 6572 0 0 0.00% 0.00%
B 7693 6573 25 25 0.32% 0.38%
C 7693 6573 186 186 2.42% 2.83%
D 7693 6573 215 215 2.79% 3.27%

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 13 254 13352 79.39 791 776 158.4
A 3 137 7384 41.72 791 776 158.4
A 0 226 6778 37.89 791 776 158.4
B 10 245 247679 1653.69 790 771 149.3
B 4 80 124655 829.72 790 771 149.3
B 5 255 83404 553.44 790 771 149.3
C 3 233 2078312 11934.29 746 750 174.1
C 14 238 128898 736.13 746 750 174.1
C 14 254 11798 63.46 746 750 174.1
D 8 195 1006109 5626.69 751 731 178.7
D 1 52 914153 5112.05 751 731 178.7
D 2 234 27845 151.75 751 731 178.7

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