ASTROSAT CZTI

Data Quality Report

Orbit 08751

Creation date: 2024-06-27T15:36:44.047996
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/AS1A03_038T01_9000001218_08751cztM0_level2.evt modeM0/AS1A03_038T01_9000001218_08751cztM0_level2_quad_clean.evt
Size (bytes)483,903,36077,247,360
Size461.5 MB 73.7 MB
Events in quadrant A3,462,192461,617
Events in quadrant B3,571,950463,889
Events in quadrant C3,330,508463,301
Events in quadrant D3,800,930448,852

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150253
B0152102
C0147682
D0161492

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72001502.083333%
B72001672.319444%
C7200961.333333%
D72001752.430556%

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 8800 7200 10 10 0.11% 0.14%
B 8800 7200 27 27 0.31% 0.38%
C 8800 7200 2 2 0.02% 0.03%
D 8800 7200 66 66 0.75% 0.92%

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 13 251 76435 419.61 869 849 180.1
A 5 16 36035 195.33 869 849 180.1
A 0 226 7816 38.68 869 849 180.1
B 10 16 171094 1003.74 871 848 169.6
B 12 111 18650 104.96 871 848 169.6
B 11 111 14919 82.96 871 848 169.6
C 1 16 37714 187.1 842 846 197.0
C 14 67 6482 28.6 842 846 197.0
C 13 61 6409 28.23 842 846 197.0
D 2 136 240045 1131.28 833 812 211.5
D 13 122 131841 619.61 833 812 211.5
D 1 52 74538 348.63 833 812 211.5

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