ASTROSAT CZTI

Data Quality Report

Orbit 51959

Creation date: 2025-05-07T04:12:27.543738
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/AS1C09_011T06_9000006468_51959cztM0_level2.fits modeM0/AS1C09_011T06_9000006468_51959cztM0_level2_quad_clean.evt
Size (bytes)758,623,68081,126,720
Size723.5 MB 77.4 MB
Events in quadrant A6,314,062523,175
Events in quadrant B4,280,295640,735
Events in quadrant C9,778,877383,372
Events in quadrant D7,227,500474,736

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230721
B0169191
C0333771
D0257341

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6218100116.098424%
B62193185.113362%
C6219257741.437530%
D6219110917.832449%

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 7388 6219 700 700 9.47% 11.26%
B 7389 6220 209 209 2.83% 3.36%
C 7389 6218 1923 1923 26.03% 30.93%
D 7389 6220 1098 1098 14.86% 17.65%

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 7 64 1827647 12070.09 608 593 151.4
A 4 159 535976 3536.91 608 593 151.4
A 4 249 414806 2736.42 608 593 151.4
B 10 41 523050 3815.99 647 626 136.9
B 10 247 168629 1227.16 647 626 136.9
B 10 44 164252 1195.19 647 626 136.9
C 15 224 6631749 46381.64 509 504 143.0
C 4 5 327563 2287.58 509 504 143.0
C 15 230 159088 1109.2 509 504 143.0
D 6 42 3174899 18754.5 593 566 169.3
D 12 17 385263 2272.86 593 566 169.3
D 0 5 274260 1617.03 593 566 169.3

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