ASTROSAT CZTI

Data Quality Report

Orbit 54449

Creation date: 2025-10-21T20:09:59.899525
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_54449cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54449cztM0_level2_quad_clean.evt
Size (bytes)609,877,44096,266,880
Size581.6 MB 91.8 MB
Events in quadrant A3,256,679675,856
Events in quadrant B3,801,548708,709
Events in quadrant C3,981,945626,796
Events in quadrant D10,967,450393,822

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151970
B0167530
C0173460
D0375070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7311130.177814%
B73111852.530434%
C73111702.325263%
D7311276037.751334%

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 7311 7311 13 13 0.18% 0.18%
B 7311 7311 115 115 1.57% 1.57%
C 7311 7311 120 120 1.64% 1.64%
D 7310 7310 2499 2499 34.19% 34.19%

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 8 9 69639 365.74 765 746 188.4
A 0 8 65580 344.19 765 746 188.4
A 4 3 63852 335.01 765 746 188.4
B 5 185 381823 2345.15 751 724 162.5
B 7 0 158280 969.55 751 724 162.5
B 0 213 95718 584.56 751 724 162.5
C 13 3 448026 2217.6 732 729 201.7
C 15 147 295621 1462.01 732 729 201.7
C 14 254 201260 994.19 732 729 201.7
D 15 108 4123875 24754.58 587 561 166.6
D 7 70 2708941 16259.93 587 561 166.6
D 8 176 1085533 6513.7 587 561 166.6

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