ASTROSAT CZTI

Data Quality Report

Orbit 44055

Creation date: 2024-06-27T22:58:49.112585
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/AS1A13_025T02_9000005938_44055cztM0_level2.fits modeM0/AS1A13_025T02_9000005938_44055cztM0_level2_quad_clean.evt
Size (bytes)427,489,920100,500,480
Size407.7 MB 95.8 MB
Events in quadrant A3,922,384686,087
Events in quadrant B2,918,388723,269
Events in quadrant C3,205,495682,812
Events in quadrant D5,316,092536,647

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156922
B0125952
C0133602
D0198302

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5940871.464646%
B5940410.690236%
C5940601.010101%
D594087314.696970%

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 7070 5941 4 4 0.06% 0.07%
B 7070 5941 3 3 0.04% 0.05%
C 7070 5941 28 28 0.40% 0.47%
D 7070 5941 628 628 8.88% 10.57%

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 10 83 1190443 8325.22 689 674 142.9
A 14 238 52014 359.24 689 674 142.9
A 15 223 16518 110.87 689 674 142.9
B 0 213 107285 779.82 698 677 136.7
B 0 200 30271 216.47 698 677 136.7
B 4 171 22594 160.32 698 677 136.7
C 3 233 248704 1523.6 686 691 162.8
C 14 254 221125 1354.17 686 691 162.8
C 9 237 61219 371.84 686 691 162.8
D 1 52 2432782 15665.79 617 596 155.3
D 13 138 189634 1217.6 617 596 155.3
D 2 249 155710 999.09 617 596 155.3

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