ASTROSAT CZTI

Data Quality Report

Orbit 37721

Creation date: 2024-06-27T21:43:35.621887
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/AS1A11_106T02_9000005344_37721cztM0_level2.evt modeM0/AS1A11_106T02_9000005344_37721cztM0_level2_quad_clean.evt
Size (bytes)603,253,44072,207,360
Size575.3 MB 68.9 MB
Events in quadrant A7,989,352432,613
Events in quadrant B2,929,160476,377
Events in quadrant C2,911,833471,408
Events in quadrant D4,082,275435,868

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0271853
B0119102
C0116582
D0155682

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5266181234.409419%
B5266601.139385%
C5266510.968477%
D52673045.771787%

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 7119 5267 1813 1813 25.47% 34.42%
B 7119 5266 43 43 0.60% 0.82%
C 7119 5266 48 48 0.67% 0.91%
D 7119 5266 390 390 5.48% 7.41%

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 15 222 5332221 44988.94 587 576 118.5
A 10 83 315182 2654.68 587 576 118.5
A 9 143 22385 184.03 587 576 118.5
B 0 189 107130 920.8 615 599 115.7
B 4 81 101008 867.88 615 599 115.7
B 5 172 92877 797.6 615 599 115.7
C 15 214 239592 1718.19 604 608 139.1
C 1 23 143927 1030.4 604 608 139.1
C 0 10 136833 979.4 604 608 139.1
D 12 227 866953 5879.67 602 584 147.3
D 2 249 328120 2222.85 602 584 147.3
D 2 250 290995 1970.89 602 584 147.3

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