ASTROSAT CZTI

Data Quality Report

Orbit 47331

Creation date: 2024-06-29T08:22:35.493779
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_037T01_9000006318_47331cztM0_level2.fits modeM0/AS1A13_037T01_9000006318_47331cztM0_level2_quad_clean.evt
Size (bytes)568,471,680101,903,040
Size542.1 MB 97.2 MB
Events in quadrant A9,512,468564,425
Events in quadrant B3,011,110759,054
Events in quadrant C2,846,320709,972
Events in quadrant D5,173,228602,697

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0328712
B0134872
C0132612
D0195782

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6443160224.864194%
B6443450.698432%
C6443260.403539%
D64434897.589632%

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 7608 6444 1236 1236 16.25% 19.18%
B 7608 6444 2 2 0.03% 0.03%
C 7608 6444 1 1 0.01% 0.02%
D 7608 6444 373 373 4.90% 5.79%

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 3370446 23663.98 682 668 142.4
A 15 235 3007738 21116.89 682 668 142.4
A 9 191 470376 3298.48 682 668 142.4
B 4 171 26137 176.36 731 708 144.2
B 5 32 23712 159.54 731 708 144.2
B 12 111 18735 125.02 731 708 144.2
C 3 233 21805 124.68 717 719 169.1
C 1 3 11951 66.41 717 719 169.1
C 12 249 9252 50.45 717 719 169.1
D 12 2 1121112 6510.4 677 655 172.1
D 6 112 767931 4458.25 677 655 172.1
D 10 204 401907 2331.47 677 655 172.1

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