ASTROSAT CZTI

Data Quality Report

Orbit 36666

Creation date: 2024-06-27T21:29:58.194427
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_049T05_9000005232_36666cztM0_level2.evt modeM0/AS1A11_049T05_9000005232_36666cztM0_level2_quad_clean.evt
Size (bytes)421,139,52061,061,760
Size401.6 MB 58.2 MB
Events in quadrant A2,960,275380,473
Events in quadrant B2,948,800385,115
Events in quadrant C3,220,699376,883
Events in quadrant D3,280,615351,193

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117823
B0116752
C0125072
D0127782

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5063110.217262%
B5063621.224570%
C50631232.429390%
D50631322.607150%

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 7156 5064 1 1 0.01% 0.02%
B 7156 5064 33 33 0.46% 0.65%
C 7156 5064 86 86 1.20% 1.70%
D 7156 5064 119 119 1.66% 2.35%

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 10 83 201385 1508.71 671 662 133.0
A 10 255 143818 1076.02 671 662 133.0
A 9 143 9971 69.97 671 662 133.0
B 5 255 188710 1519.17 665 651 123.8
B 0 190 39621 314.81 665 651 123.8
B 0 189 38757 307.83 665 651 123.8
C 0 10 389241 2640.86 647 652 147.1
C 15 214 231736 1570.45 647 652 147.1
C 14 254 70476 474.53 647 652 147.1
D 12 233 189051 1222.01 642 625 154.2
D 13 249 136111 878.68 642 625 154.2
D 13 171 127714 824.22 642 625 154.2

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