ASTROSAT CZTI

Data Quality Report

Orbit 11431

Creation date: 2024-06-27T16:13:00.500760
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/AS1G08_010T01_9000001672_11431cztM0_level2.evt modeM0/AS1G08_010T01_9000001672_11431cztM0_level2_quad_clean.evt
Size (bytes)491,575,68080,087,040
Size468.8 MB 76.4 MB
Events in quadrant A3,264,381505,223
Events in quadrant B4,657,103478,610
Events in quadrant C3,099,868495,033
Events in quadrant D3,416,879484,643

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139773
B0180872
C0137762
D0147682

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6617650.982318%
B66174166.286837%
C6617410.619616%
D6617781.178782%

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 7687 6618 1 1 0.01% 0.02%
B 7687 6618 218 218 2.84% 3.29%
C 7687 6618 0 0 0.00% 0.00%
D 7687 6618 31 31 0.40% 0.47%

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 1 162 33476 191.33 826 808 170.7
A 1 178 18597 104.19 826 808 170.7
A 1 161 16094 89.53 826 808 170.7
B 4 239 1090091 7112.55 804 785 153.2
B 3 64 225358 1466.34 804 785 153.2
B 3 189 63695 410.77 804 785 153.2
C 13 61 5679 26.47 794 798 184.4
C 3 202 2009 6.57 794 798 184.4
C 14 67 1944 6.22 794 798 184.4
D 10 253 94592 492.18 795 775 190.6
D 1 52 77389 401.93 795 775 190.6
D 13 104 62154 322.0 795 775 190.6

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