ASTROSAT CZTI

Data Quality Report

Orbit 08265

Creation date: 2024-06-27T15:30:18.920244
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/AS1G06_136T01_9000001148_08265cztM0_level2.evt modeM0/AS1G06_136T01_9000001148_08265cztM0_level2_quad_clean.evt
Size (bytes)466,021,44068,400,000
Size444.4 MB 65.2 MB
Events in quadrant A3,270,914403,054
Events in quadrant B3,369,290409,693
Events in quadrant C3,233,508411,181
Events in quadrant D3,803,532399,176

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136563
B0138732
C0135432
D0154422

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64211221.900016%
B64211402.180346%
C6421881.370503%
D64211482.304937%

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 7646 6421 2 2 0.03% 0.03%
B 7646 6421 5 5 0.07% 0.08%
C 7646 6421 0 0 0.00% 0.00%
D 7646 6421 43 43 0.56% 0.67%

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 0 254 13325 73.05 847 830 171.0
A 0 226 7777 40.62 847 830 171.0
A 12 194 7275 37.68 847 830 171.0
B 11 51 39874 240.03 846 828 162.7
B 0 214 32692 195.88 846 828 162.7
B 12 111 17747 104.01 846 828 162.7
C 9 54 18625 93.33 824 832 190.6
C 13 61 6241 28.37 824 832 190.6
C 3 202 2120 6.76 824 832 190.6
D 13 105 462873 2348.21 825 807 196.8
D 1 52 130068 656.9 825 807 196.8
D 2 152 52346 261.92 825 807 196.8

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