ASTROSAT CZTI

Data Quality Report

Orbit 53161

Creation date: 2025-07-28T17:43:00.759783
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_9000006490_53161cztM0_level2.fits modeM0/AS1C09_011T06_9000006490_53161cztM0_level2_quad_clean.evt
Size (bytes)508,766,40092,695,680
Size485.2 MB 88.4 MB
Events in quadrant A3,685,421633,079
Events in quadrant B5,164,959616,700
Events in quadrant C5,798,000542,768
Events in quadrant D3,690,966570,752

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155841
B0197703
C0216861
D0156901

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63561402.202643%
B63566109.597231%
C635668510.777218%
D63562073.256765%

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 7326 6357 98 98 1.34% 1.54%
B 7326 6357 401 401 5.47% 6.31%
C 7326 6357 619 619 8.45% 9.74%
D 7326 6357 134 134 1.83% 2.11%

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 15 174 468200 2753.1 666 650 169.8
A 3 62 108036 632.33 666 650 169.8
A 0 8 78219 456.75 666 650 169.8
B 10 191 1977551 14490.59 641 619 136.4
B 4 81 251174 1836.53 641 619 136.4
B 1 239 106686 777.45 641 619 136.4
C 0 240 1046806 6009.71 626 619 174.1
C 15 224 737427 4232.52 626 619 174.1
C 1 241 619786 3556.74 626 619 174.1
D 10 172 263317 1406.64 650 619 186.8
D 12 3 221783 1184.24 650 619 186.8
D 2 120 148953 794.27 650 619 186.8

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