ASTROSAT CZTI

Data Quality Report

Orbit 40125

Creation date: 2024-06-27T22:12:37.129823
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/AS1A12_004T01_9000005520_40125cztM0_level2.fits modeM0/AS1A12_004T01_9000005520_40125cztM0_level2_quad_clean.evt
Size (bytes)360,241,92089,092,800
Size343.6 MB 85.0 MB
Events in quadrant A2,716,407603,325
Events in quadrant B2,627,211620,815
Events in quadrant C4,575,442569,557
Events in quadrant D3,013,738541,916

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114213
B0113852
C0169342
D0126962

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5166130.251645%
B5166591.142083%
C51663827.394503%
D51661352.613240%

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 7018 5167 6 6 0.09% 0.12%
B 7018 5167 28 28 0.40% 0.54%
C 7018 5167 420 420 5.98% 8.13%
D 7018 5167 110 110 1.57% 2.13%

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 10 83 457755 3860.57 578 566 118.4
A 6 10 14172 114.89 578 566 118.4
A 3 137 6364 48.96 578 566 118.4
B 4 171 180899 1625.01 578 563 111.0
B 5 255 126201 1132.13 578 563 111.0
B 12 111 13854 119.77 578 563 111.0
C 9 187 2028345 15471.76 561 564 131.1
C 15 214 212211 1614.85 561 564 131.1
C 0 10 120569 915.63 561 564 131.1
D 13 249 249437 1834.18 564 550 135.7
D 2 249 147436 1082.48 564 550 135.7
D 9 19 142525 1046.29 564 550 135.7

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