ASTROSAT CZTI

Data Quality Report

Orbit 54418

Creation date: 2025-10-19T17:21:34.789766
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/AS1A14_126T19_9000006518_54418cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54418cztM0_level2_quad_clean.evt
Size (bytes)551,422,08093,879,360
Size525.9 MB 89.5 MB
Events in quadrant A3,381,555639,801
Events in quadrant B3,474,107682,608
Events in quadrant C3,672,242616,289
Events in quadrant D9,342,832418,963

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151370
B0155630
C0163110
D0326150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69562103.018976%
B69552713.896477%
C69561892.717079%
D6956225032.346176%

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 6956 6956 21 21 0.30% 0.30%
B 6955 6955 59 59 0.85% 0.85%
C 6956 6956 115 115 1.65% 1.65%
D 6956 6956 2160 2160 31.05% 31.05%

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 11 3 130447 697.33 756 738 186.0
A 7 206 120459 643.64 756 738 186.0
A 0 8 65056 345.78 756 738 186.0
B 10 247 174131 1088.16 738 709 159.4
B 5 185 160324 1001.53 738 709 159.4
B 0 213 136938 854.79 738 709 159.4
C 13 3 297076 1512.27 725 719 196.0
C 1 241 267052 1359.07 725 719 196.0
C 14 254 159877 812.16 725 719 196.0
D 8 176 4225480 24612.12 607 577 171.7
D 7 70 1155308 6726.87 607 577 171.7
D 3 12 911854 5308.63 607 577 171.7

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