ASTROSAT CZTI

Data Quality Report

Orbit 25854

Creation date: 2024-06-27T19:22:07.750243
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/AS1A07_068T01_9000003756_25854cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25854cztM0_level2_quad_clean.evt
Size (bytes)644,345,28094,524,480
Size614.5 MB 90.1 MB
Events in quadrant A3,987,593628,538
Events in quadrant B3,227,682638,302
Events in quadrant C6,740,609574,939
Events in quadrant D5,118,940567,198

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160680
B0136530
C0245960
D0196420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64991352.077243%
B6499400.615479%
C64996049.293737%
D64995879.032159%

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 7604 6500 74 74 0.97% 1.14%
B 7604 6500 0 0 0.00% 0.00%
C 7604 6500 303 303 3.98% 4.66%
D 7604 6500 574 574 7.55% 8.83%

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 0 13 822425 5004.0 819 803 164.2
A 13 254 9240 51.38 819 803 164.2
A 11 29 7872 43.05 819 803 164.2
B 12 111 18823 115.95 813 793 155.5
B 11 111 16802 102.95 813 793 155.5
B 14 111 15380 93.81 813 793 155.5
C 7 87 3628836 20642.01 753 757 175.8
C 14 238 120235 679.77 753 757 175.8
C 3 233 38530 214.91 753 757 175.8
D 1 52 1835772 10217.78 758 740 179.6
D 1 3 229671 1274.73 758 740 179.6
D 12 233 151804 841.15 758 740 179.6

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