ASTROSAT CZTI

Data Quality Report

Orbit 15745

Creation date: 2024-06-27T17:12:56.004169
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/AS1T02_095T01_9000002330_15745cztM0_level2.evt modeM0/AS1T02_095T01_9000002330_15745cztM0_level2_quad_clean.evt
Size (bytes)521,576,640100,848,960
Size497.4 MB 96.2 MB
Events in quadrant A3,128,319660,662
Events in quadrant B5,636,870651,848
Events in quadrant C3,240,077657,003
Events in quadrant D3,357,588638,790

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137813
B0211972
C0139202
D0145992

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6393651.016737%
B63934126.444549%
C63931131.767558%
D6393901.407790%

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 7519 6395 0 0 0.00% 0.00%
B 7519 6395 195 195 2.59% 3.05%
C 7519 6395 0 0 0.00% 0.00%
D 7519 6395 7 7 0.09% 0.11%

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 0 226 7009 38.09 810 794 163.2
A 4 2 6414 34.44 810 794 163.2
A 12 194 6052 32.22 810 794 163.2
B 4 251 2308658 15574.44 789 771 148.2
B 4 48 68478 456.91 789 771 148.2
B 4 216 51954 345.4 789 771 148.2
C 14 238 120920 658.13 782 787 182.5
C 3 233 56800 306.86 782 787 182.5
C 10 187 5544 26.06 782 787 182.5
D 1 52 271497 1396.19 800 780 193.9
D 2 234 26029 130.22 800 780 193.9
D 10 70 16385 80.48 800 780 193.9

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