ASTROSAT CZTI

Data Quality Report

Orbit 06757

Creation date: 2024-06-27T15:11:19.913691
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/AS1A02_006T01_9000000934_06757cztM0_level2.evt modeM0/AS1A02_006T01_9000000934_06757cztM0_level2_quad_clean.evt
Size (bytes)420,318,72097,784,640
Size400.8 MB 93.3 MB
Events in quadrant A3,069,308643,682
Events in quadrant B2,959,362653,117
Events in quadrant C2,726,805630,546
Events in quadrant D3,554,914604,051

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133112
B0130171
C0125541
D0148171

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6157931.510476%
B6157580.942017%
C6157320.519734%
D61571412.290076%

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 7357 6158 24 24 0.33% 0.39%
B 7357 6158 2 2 0.03% 0.03%
C 7357 6158 0 0 0.00% 0.00%
D 7357 6158 88 88 1.20% 1.43%

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 4 2 127650 846.99 733 718 149.9
A 13 251 56899 374.88 733 718 149.9
A 15 234 39653 259.8 733 718 149.9
B 0 214 83878 587.15 737 720 141.6
B 0 189 14352 96.25 737 720 141.6
B 12 111 13304 88.85 737 720 141.6
C 13 61 5502 29.69 697 702 161.7
C 12 4 3115 14.93 697 702 161.7
C 1 3 2732 12.56 697 702 161.7
D 2 216 453207 2647.36 697 675 170.9
D 8 195 221039 1289.15 697 675 170.9
D 12 220 84142 488.29 697 675 170.9

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