ASTROSAT CZTI

Data Quality Report

Orbit 14780

Creation date: 2024-06-27T16:59:35.797711
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/AS1A04_022T06_9000002182_14780cztM0_level2.evt modeM0/AS1A04_022T06_9000002182_14780cztM0_level2_quad_clean.evt
Size (bytes)517,703,04072,806,400
Size493.7 MB 69.4 MB
Events in quadrant A3,537,511440,108
Events in quadrant B4,141,097437,245
Events in quadrant C3,742,869435,741
Events in quadrant D3,805,071426,842

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145283
B0167432
C0151552
D0156142

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66691352.024291%
B66692043.058929%
C66691221.829360%
D66691442.159244%

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 7730 6671 2 2 0.03% 0.03%
B 7730 6671 36 36 0.47% 0.54%
C 7730 6671 0 0 0.00% 0.00%
D 7730 6671 31 31 0.40% 0.46%

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 15 31 93291 526.79 870 854 175.5
A 12 189 66430 373.71 870 854 175.5
A 3 1 16978 91.89 870 854 175.5
B 3 64 414996 2575.96 859 839 160.8
B 0 219 205280 1271.57 859 839 160.8
B 0 229 39897 242.93 859 839 160.8
C 3 233 455420 2342.87 840 845 194.0
C 0 207 9465 44.43 840 845 194.0
C 13 61 6344 28.34 840 845 194.0
D 15 0 291000 1347.59 843 823 215.3
D 12 233 225327 1042.6 843 823 215.3
D 2 120 27954 126.0 843 823 215.3

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