ASTROSAT CZTI

Data Quality Report

Orbit 20167

Creation date: 2024-06-27T18:11:59.247395
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_180T01_9000002992_20167cztM0_level2.evt modeM0/AS1A05_180T01_9000002992_20167cztM0_level2_quad_clean.evt
Size (bytes)346,907,52079,341,120
Size330.8 MB 75.7 MB
Events in quadrant A2,482,277529,892
Events in quadrant B2,514,371524,779
Events in quadrant C2,634,317499,827
Events in quadrant D2,536,135499,375

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104621
B0104721
C0106561
D0108651

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49691412.837593%
B49701312.635815%
C49701683.380282%
D49701322.655936%

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 5644 4970 11 11 0.19% 0.22%
B 5645 4971 2 2 0.04% 0.04%
C 5645 4971 0 0 0.00% 0.00%
D 5645 4971 15 15 0.27% 0.30%

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 14 238 67533 525.25 625 615 127.4
A 10 253 5403 37.58 625 615 127.4
A 0 226 5381 37.41 625 615 127.4
B 0 198 53075 440.13 617 601 119.2
B 0 183 20222 164.57 617 601 119.2
B 12 111 13981 112.23 617 601 119.2
C 3 233 227369 1612.1 594 598 140.7
C 14 238 92425 652.79 594 598 140.7
C 13 61 4126 25.08 594 598 140.7
D 1 52 112465 757.52 607 591 147.7
D 1 20 38912 259.48 607 591 147.7
D 2 234 24325 160.71 607 591 147.7

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