ASTROSAT CZTI

Data Quality Report

Orbit 45500

Creation date: 2024-06-27T23:12:55.803021
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/AS1A13_054T01_9000006098_45500cztM0_level2.fits modeM0/AS1A13_054T01_9000006098_45500cztM0_level2_quad_clean.evt
Size (bytes)493,727,040112,631,040
Size470.9 MB 107.4 MB
Events in quadrant A5,977,921751,154
Events in quadrant B4,086,028763,021
Events in quadrant C3,214,026744,147
Events in quadrant D4,462,130671,086

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0223262
B0167572
C0144032
D0178612

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69062173.142195%
B69063955.719664%
C69061001.448016%
D69062343.388358%

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 7876 6907 5 5 0.06% 0.07%
B 7876 6907 216 216 2.74% 3.13%
C 7876 6907 25 25 0.32% 0.36%
D 7876 6907 105 105 1.33% 1.52%

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 10 83 2859234 17153.98 800 782 166.6
A 2 79 10859 60.47 800 782 166.6
A 3 137 9238 50.75 800 782 166.6
B 12 16 724647 4634.75 786 763 156.2
B 5 172 96367 612.12 786 763 156.2
B 15 201 72183 457.28 786 763 156.2
C 14 254 99660 534.19 785 788 185.1
C 1 3 32336 170.45 785 788 185.1
C 2 14 17354 89.5 785 788 185.1
D 11 241 402799 2056.5 781 758 195.5
D 6 239 248753 1268.53 781 758 195.5
D 13 249 226169 1153.01 781 758 195.5

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