ASTROSAT CZTI

Data Quality Report

Orbit 28457

Creation date: 2024-06-27T19:51:56.528142
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_101T21_9000004090_28457cztM0_level2.evt modeM0/AS1A10_101T21_9000004090_28457cztM0_level2_quad_clean.evt
Size (bytes)587,761,920131,996,160
Size560.5 MB 125.9 MB
Events in quadrant A3,237,842919,949
Events in quadrant B3,493,749933,067
Events in quadrant C3,291,546909,472
Events in quadrant D7,362,599807,245

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136680
B0143400
C0137040
D0262060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6128891.452350%
B61291111.811062%
C61291282.088432%
D6129107717.572198%

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 7428 6128 1 1 0.01% 0.02%
B 7429 6129 4 4 0.05% 0.07%
C 7429 6129 0 0 0.00% 0.00%
D 7429 6129 937 937 12.61% 15.29%

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 15 174 51372 313.68 818 804 161.2
A 12 96 22826 136.6 818 804 161.2
A 13 254 10782 61.89 818 804 161.2
B 15 222 229992 1542.74 809 792 148.6
B 10 245 77709 517.73 809 792 148.6
B 12 111 17329 111.31 809 792 148.6
C 14 238 132668 714.52 803 807 184.5
C 7 220 22845 119.42 803 807 184.5
C 3 233 6290 29.71 803 807 184.5
D 1 52 2369790 13338.51 761 743 177.6
D 8 195 1293342 7277.75 761 743 177.6
D 2 250 674523 3793.6 761 743 177.6

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