ASTROSAT CZTI

Data Quality Report

Orbit 50772

Creation date: 2025-02-16T05:19:58.413021
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_001T01_9000006450_50772cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50772cztM0_level2_quad_clean.evt
Size (bytes)723,473,28098,697,600
Size690.0 MB 94.1 MB
Events in quadrant A5,645,031648,569
Events in quadrant B4,793,491717,918
Events in quadrant C6,180,699615,835
Events in quadrant D9,607,258506,408

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216802
B0193303
C0232892
D0335482

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71733524.907291%
B71722974.141104%
C71725137.152817%
D7172131418.321249%

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 7728 7175 271 271 3.51% 3.78%
B 7727 7174 153 153 1.98% 2.13%
C 7727 7174 399 399 5.16% 5.56%
D 7727 7173 1089 1089 14.09% 15.18%

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 1348180 7120.91 742 723 189.2
A 6 161 196645 1035.39 742 723 189.2
A 8 38 155918 820.16 742 723 189.2
B 4 206 843726 5376.22 744 717 156.8
B 6 255 207910 1321.36 744 717 156.8
B 6 51 112547 713.19 744 717 156.8
C 5 10 2007386 10017.9 722 718 200.3
C 13 3 312920 1558.61 722 718 200.3
C 4 5 192439 957.13 722 718 200.3
D 8 242 2230022 11882.11 663 638 187.6
D 2 216 1430539 7621.05 663 638 187.6
D 8 241 610753 3251.77 663 638 187.6

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