ASTROSAT CZTI

Data Quality Report

Orbit 24231

Creation date: 2024-06-27T19:03:46.124588
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/AS1A07_118T01_9000003586_24231cztM0_level2.evt modeM0/AS1A07_118T01_9000003586_24231cztM0_level2_quad_clean.evt
Size (bytes)603,864,000111,205,440
Size575.9 MB 106.1 MB
Events in quadrant A4,208,807743,226
Events in quadrant B3,834,765774,561
Events in quadrant C4,538,563731,450
Events in quadrant D5,259,052658,048

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164782
B0153592
C0178742
D0197442

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66062433.678474%
B66061772.679382%
C66063024.571602%
D660666510.066606%

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 7981 6607 213 213 2.67% 3.22%
B 7981 6607 112 112 1.40% 1.70%
C 7981 6607 153 153 1.92% 2.32%
D 7981 6607 619 619 7.76% 9.37%

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 6 16 793358 4531.0 882 868 174.9
A 3 1 18402 100.25 882 868 174.9
A 13 254 10923 57.49 882 868 174.9
B 12 17 335665 2017.16 889 872 166.0
B 0 245 20162 116.22 889 872 166.0
B 12 111 18742 107.67 889 872 166.0
C 2 16 709313 3528.13 859 868 200.8
C 7 247 336629 1672.12 859 868 200.8
C 14 238 136499 675.46 859 868 200.8
D 1 52 1841180 9241.96 823 801 199.1
D 12 233 118059 588.84 823 801 199.1
D 8 195 85452 425.1 823 801 199.1

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