ASTROSAT CZTI

Data Quality Report

Orbit 18109

Creation date: 2024-06-27T17:45:03.633854
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/AS1A05_019T01_9000002688_18109cztM0_level2.evt modeM0/AS1A05_019T01_9000002688_18109cztM0_level2_quad_clean.evt
Size (bytes)585,420,48094,783,680
Size558.3 MB 90.4 MB
Events in quadrant A3,136,732648,866
Events in quadrant B3,302,392644,108
Events in quadrant C3,081,971605,647
Events in quadrant D7,778,153528,482

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132720
B0136620
C0131110
D0273980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63491061.669554%
B63501241.952756%
C63501312.062992%
D6350143722.629921%

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 7439 6350 2 2 0.03% 0.03%
B 7440 6351 13 13 0.17% 0.20%
C 7440 6351 0 0 0.00% 0.00%
D 7440 6351 1296 1296 17.42% 20.41%

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 23602 141.45 807 791 161.3
A 4 2 9513 54.09 807 791 161.3
A 0 226 7141 39.38 807 791 161.3
B 6 36 35782 229.65 794 774 152.4
B 7 220 32986 211.31 794 774 152.4
B 3 64 31958 204.57 794 774 152.4
C 14 238 119789 670.88 758 762 177.4
C 13 61 5387 26.07 758 762 177.4
C 5 218 3122 13.3 758 762 177.4
D 7 238 2834212 16152.26 723 703 175.4
D 11 176 1131794 6447.72 723 703 175.4
D 10 70 557223 3172.41 723 703 175.4

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