ASTROSAT CZTI

Data Quality Report

Orbit 41926

Creation date: 2024-06-27T22:34:35.482951
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_099T03_9000005720_41926cztM0_level2.fits modeM0/AS1A12_099T03_9000005720_41926cztM0_level2_quad_clean.evt
Size (bytes)124,983,36013,386,240
Size119.2 MB 12.8 MB
Events in quadrant A633,402111,954
Events in quadrant B526,899113,292
Events in quadrant C779,45797,358
Events in quadrant D2,605,4345,719

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025031
B022751
C029021
D083971

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1005111.094527%
B1005232.288557%
C100512112.039801%
D100596696.119403%

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 1005 1005 8 8 0.80% 0.80%
B 1005 1005 16 16 1.59% 1.59%
C 1005 1005 118 118 11.74% 11.74%
D 1005 1005 941 941 93.63% 93.63%

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 158465 6433.68 111 108 24.6
A 14 24 39641 1606.13 111 108 24.6
A 2 79 3254 127.81 111 108 24.6
B 5 255 72453 3152.34 107 104 23.0
B 0 229 26581 1153.64 107 104 23.0
B 7 202 3947 167.44 107 104 23.0
C 0 10 341009 13684.85 99 99 24.9
C 15 214 40962 1640.33 99 99 24.9
C 0 15 7312 289.55 99 99 24.9
D 12 79 2291587 152746.53 53 52 15.0
D 12 218 41506 2763.19 53 52 15.0
D 2 249 39366 2620.55 53 52 15.0

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