ASTROSAT CZTI

Data Quality Report

Orbit 18064

Creation date: 2024-06-27T17:44:34.174674
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/AS1A06_003T04_9000002682_18064cztM0_level2.evt modeM0/AS1A06_003T04_9000002682_18064cztM0_level2_quad_clean.evt
Size (bytes)525,700,800111,021,120
Size501.3 MB 105.9 MB
Events in quadrant A5,047,721689,936
Events in quadrant B3,453,902780,497
Events in quadrant C3,375,285719,119
Events in quadrant D3,606,829724,475

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0194492
B0141822
C0138513
D0148042

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6417246938.475923%
B64181211.885323%
C64171502.337541%
D64171261.963534%

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 7712 6417 40 40 0.52% 0.62%
B 7713 6419 11 11 0.14% 0.17%
C 7712 6418 1 1 0.01% 0.02%
D 7712 6418 32 32 0.41% 0.50%

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 14 111 1856045 11985.73 781 767 154.8
A 15 174 183694 1181.77 781 767 154.8
A 4 2 8665 51.02 781 767 154.8
B 5 172 57503 353.92 853 835 160.1
B 3 64 20446 122.48 853 835 160.1
B 12 111 17620 104.83 853 835 160.1
C 14 238 128454 688.92 806 811 185.3
C 3 233 55281 293.99 806 811 185.3
C 9 54 24470 127.69 806 811 185.3
D 11 176 151612 743.39 838 816 202.8
D 10 70 107657 526.7 838 816 202.8
D 7 238 92943 454.17 838 816 202.8

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