ASTROSAT CZTI

Data Quality Report

Orbit 16483

Creation date: 2024-06-27T17:23:21.788902
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/AS1A05_108T01_9000002438_16483cztM0_level2.evt modeM0/AS1A05_108T01_9000002438_16483cztM0_level2_quad_clean.evt
Size (bytes)497,977,92094,167,360
Size474.9 MB 89.8 MB
Events in quadrant A3,165,972614,868
Events in quadrant B3,639,324624,158
Events in quadrant C4,877,193580,416
Events in quadrant D2,962,632583,803

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136802
B0150681
C0192821
D0134171

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6431530.824133%
B6431831.290624%
C64313505.442388%
D6431330.513139%

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 7532 6432 10 10 0.13% 0.16%
B 7532 6432 28 28 0.37% 0.44%
C 7532 6432 33 33 0.44% 0.51%
D 7532 6433 16 16 0.21% 0.25%

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 15 174 164239 1042.88 780 765 156.8
A 0 226 6991 39.72 780 765 156.8
A 15 223 6809 38.56 780 765 156.8
B 10 16 129687 862.36 780 762 149.5
B 4 48 113490 754.02 780 762 149.5
B 15 35 105667 701.69 780 762 149.5
C 3 233 1827615 10775.94 728 734 169.5
C 14 238 111554 653.68 728 734 169.5
C 7 247 99447 582.26 728 734 169.5
D 2 33 67806 365.47 747 724 183.5
D 2 234 34008 181.33 747 724 183.5
D 7 223 23583 124.54 747 724 183.5

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