ASTROSAT CZTI

Data Quality Report

Orbit 17455

Creation date: 2024-06-27T17:36:45.131745
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/AS1T03_067T01_9000002582_17455cztM0_level2.evt modeM0/AS1T03_067T01_9000002582_17455cztM0_level2_quad_clean.evt
Size (bytes)464,143,68097,295,040
Size442.6 MB 92.8 MB
Events in quadrant A2,979,455651,864
Events in quadrant B3,409,060658,097
Events in quadrant C3,014,547625,175
Events in quadrant D4,262,499608,681

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123221
B0136781
C0124651
D0164521

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5759661.146032%
B5760671.163194%
C5760881.527778%
D57602243.888889%

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 7059 5760 0 0 0.00% 0.00%
B 7060 5761 10 10 0.14% 0.17%
C 7060 5761 0 0 0.00% 0.00%
D 7060 5761 128 128 1.81% 2.22%

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 0 226 7096 41.13 774 758 154.1
A 12 194 5850 33.05 774 758 154.1
A 3 137 4794 26.19 774 758 154.1
B 7 220 190157 1337.17 762 745 141.7
B 15 35 81493 570.05 762 745 141.7
B 4 216 44802 311.02 762 745 141.7
C 14 238 115457 668.18 738 745 171.7
C 3 233 11617 63.33 738 745 171.7
C 5 218 7717 40.61 738 745 171.7
D 11 176 605695 3366.78 752 733 179.7
D 13 232 516675 2871.36 752 733 179.7
D 15 0 88851 490.4 752 733 179.7

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