ASTROSAT CZTI

Data Quality Report

Orbit 51021

Creation date: 2025-03-04T23:46:48.452534
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/AS1C07_001T02_9000006452_51021cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_51021cztM0_level2_quad_clean.evt
Size (bytes)710,688,960101,957,760
Size677.8 MB 97.2 MB
Events in quadrant A6,980,139673,976
Events in quadrant B4,878,150736,864
Events in quadrant C8,396,267541,871
Events in quadrant D5,471,500611,418

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0259170
B0198020
C0299490
D0214820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75144505.988821%
B75142973.952622%
C7515155020.625416%
D75152793.712575%

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 7514 7514 381 381 5.07% 5.07%
B 7514 7514 199 199 2.65% 2.65%
C 7515 7515 1421 1421 18.91% 18.91%
D 7515 7515 237 237 3.15% 3.15%

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 12 80 1799877 9348.03 774 758 192.5
A 12 3 394563 2046.17 774 758 192.5
A 4 4 365229 1893.75 774 758 192.5
B 4 81 1103296 6708.02 771 747 164.4
B 4 171 148183 897.02 771 747 164.4
B 4 206 112375 679.16 771 747 164.4
C 15 1 3579588 18938.89 681 674 189.0
C 12 252 346693 1831.06 681 674 189.0
C 9 38 244442 1289.97 681 674 189.0
D 3 12 670936 3198.42 754 728 209.5
D 8 176 270621 1288.01 754 728 209.5
D 12 191 247429 1177.33 754 728 209.5

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