ASTROSAT CZTI

Data Quality Report

Orbit 17562

Creation date: 2024-06-27T17:38:01.397936
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_012T02_9000002602_17562cztM0_level2.evt modeM0/AS1A05_012T02_9000002602_17562cztM0_level2_quad_clean.evt
Size (bytes)667,172,16091,909,440
Size636.3 MB 87.7 MB
Events in quadrant A7,813,592527,980
Events in quadrant B3,932,266588,612
Events in quadrant C3,987,742564,557
Events in quadrant D3,948,647564,823

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0286982
B0168182
C0167852
D0170812

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7715139818.120544%
B77161912.475376%
C77162212.864178%
D77161882.436496%

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 8490 7717 942 942 11.10% 12.21%
B 8491 7718 33 33 0.39% 0.43%
C 8491 7718 18 18 0.21% 0.23%
D 8491 7717 65 65 0.77% 0.84%

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 14 237 4420987 25055.57 872 850 176.4
A 11 47 18691 101.13 872 850 176.4
A 15 174 16524 88.85 872 850 176.4
B 7 220 210873 1182.33 928 902 177.6
B 12 111 20497 110.34 928 902 177.6
B 0 198 18712 100.29 928 902 177.6
C 3 233 267972 1296.04 889 891 206.1
C 14 238 137707 663.91 889 891 206.1
C 0 207 107740 518.5 889 891 206.1
D 13 189 349253 1569.46 909 881 222.0
D 10 70 64679 287.42 909 881 222.0
D 2 234 37137 163.34 909 881 222.0

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