ASTROSAT CZTI

Data Quality Report

Orbit 27157

Creation date: 2024-06-27T19:37:06.344148
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/AS1T03_245T01_9000003916_27157cztM0_level2.evt modeM0/AS1T03_245T01_9000003916_27157cztM0_level2_quad_clean.evt
Size (bytes)520,554,24089,556,480
Size496.4 MB 85.4 MB
Events in quadrant A3,588,888576,291
Events in quadrant B3,670,002588,760
Events in quadrant C3,257,703561,302
Events in quadrant D4,804,130528,558

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147130
B0150830
C0136500
D0187740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6549560.855092%
B6550751.145038%
C6550671.022901%
D65502694.106870%

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 7539 6550 31 31 0.41% 0.47%
B 7540 6551 9 9 0.12% 0.14%
C 7540 6551 7 7 0.09% 0.11%
D 7540 6551 215 215 2.85% 3.28%

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 239597 1454.69 820 803 164.2
A 14 235 160561 973.22 820 803 164.2
A 8 192 14246 81.89 820 803 164.2
B 3 112 150525 962.53 823 802 155.6
B 0 189 115943 740.21 823 802 155.6
B 15 32 66633 423.21 823 802 155.6
C 14 238 125907 677.3 786 791 184.7
C 15 208 50085 266.85 786 791 184.7
C 13 61 5438 25.16 786 791 184.7
D 1 52 831933 4053.1 768 755 205.1
D 7 38 448912 2185.36 768 755 205.1
D 13 172 222115 1079.42 768 755 205.1

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