ASTROSAT CZTI

Data Quality Report

Orbit 36628

Creation date: 2024-06-27T21:29:25.258870
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/AS1A11_049T03_9000005228_36628cztM0_level2.evt modeM0/AS1A11_049T03_9000005228_36628cztM0_level2_quad_clean.evt
Size (bytes)971,040,96065,620,800
Size926.1 MB 62.6 MB
Events in quadrant A3,309,381468,192
Events in quadrant B10,428,533286,933
Events in quadrant C8,194,557418,595
Events in quadrant D7,077,483397,241

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136653
B0350952
C0283572
D0251222

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5929671.130039%
B5929323454.545455%
C5929201634.002361%
D592999316.748187%

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 7242 5930 43 43 0.59% 0.73%
B 7242 5930 2340 2340 32.31% 39.46%
C 7242 5930 1481 1481 20.45% 24.97%
D 7242 5930 895 895 12.36% 15.09%

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 15 223 244236 1744.17 688 673 139.6
A 10 83 232936 1663.25 688 673 139.6
A 0 8 76568 543.49 688 673 139.6
B 5 200 7989844 81555.6 507 495 98.0
B 5 255 121165 1231.8 507 495 98.0
B 0 219 89655 910.15 507 495 98.0
C 14 254 5249429 39109.75 575 578 134.2
C 0 10 402121 2991.94 575 578 134.2
C 15 214 225965 1679.38 575 578 134.2
D 12 235 3124574 19938.74 628 610 156.7
D 12 17 383074 2441.08 628 610 156.7
D 2 250 381423 2430.54 628 610 156.7

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