ASTROSAT CZTI

Data Quality Report

Orbit 27878

Creation date: 2024-06-27T19:45:30.430807
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_024T01_9000004026_27878cztM0_level2.evt modeM0/AS1A10_024T01_9000004026_27878cztM0_level2_quad_clean.evt
Size (bytes)463,754,880103,066,560
Size442.3 MB 98.3 MB
Events in quadrant A3,236,922712,266
Events in quadrant B3,611,051693,132
Events in quadrant C3,238,781655,457
Events in quadrant D3,562,813653,455

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133090
B0144900
C0133460
D0143470

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5826721.235839%
B58262474.239616%
C5827971.664664%
D5827801.372919%

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 7131 5826 0 0 0.00% 0.00%
B 7131 5826 155 155 2.17% 2.66%
C 7132 5827 2 2 0.03% 0.03%
D 7132 5827 54 54 0.76% 0.93%

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 6 16 198916 1258.81 786 773 157.4
A 13 254 10469 61.6 786 773 157.4
A 0 226 7109 40.25 786 773 157.4
B 5 172 412346 2897.83 758 741 142.0
B 10 245 116933 818.03 758 741 142.0
B 4 200 30191 207.34 758 741 142.0
C 3 233 300737 1817.4 721 727 165.1
C 14 238 119187 717.61 721 727 165.1
C 13 61 5117 26.59 721 727 165.1
D 1 52 403583 2311.64 740 721 174.3
D 2 250 266513 1525.13 740 721 174.3
D 2 234 25757 143.66 740 721 174.3

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