ASTROSAT CZTI

Data Quality Report

Orbit 05850

Creation date: 2024-06-27T14:59:58.996384
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/AS1G06_039T01_9000000758_05850cztM0_level2.evt modeM0/AS1G06_039T01_9000000758_05850cztM0_level2_quad_clean.evt
Size (bytes)464,785,920113,215,680
Size443.3 MB 108.0 MB
Events in quadrant A3,141,730751,941
Events in quadrant B3,212,185748,356
Events in quadrant C3,057,886742,127
Events in quadrant D4,188,234698,799

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144243
B0144342
C0143722
D0174602

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70051522.169879%
B70051752.498216%
C70051121.598858%
D70062443.482729%

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 7685 7006 4 4 0.05% 0.06%
B 7685 7006 1 1 0.01% 0.01%
C 7685 7006 0 0 0.00% 0.00%
D 7686 7007 106 106 1.38% 1.51%

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 15 234 32373 193.56 805 787 163.2
A 13 251 8802 49.12 805 787 163.2
A 0 226 7952 43.91 805 787 163.2
B 15 204 29626 186.04 809 787 155.0
B 15 85 17115 105.33 809 787 155.0
B 12 111 14471 88.27 809 787 155.0
C 1 16 14278 75.58 776 779 178.6
C 12 4 8259 41.88 776 779 178.6
C 13 61 6320 31.02 776 779 178.6
D 1 239 491315 2625.67 768 743 186.8
D 2 152 452988 2420.53 768 743 186.8
D 12 233 176769 942.14 768 743 186.8

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