ASTROSAT CZTI

Data Quality Report

Orbit 04674

Creation date: 2024-06-27T14:45:36.203352
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/AS1SLEW_01234_9000000587_04674cztM0_level2.evt modeM0/AS1SLEW_01234_9000000587_04674cztM0_level2_quad_clean.evt
Size (bytes)126,227,5204,815,360
Size120.4 MB 4.6 MB
Events in quadrant A628,0977,578
Events in quadrant B653,7407,830
Events in quadrant C644,0017,930
Events in quadrant D1,788,9076,988

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A031090
B031130
C031140
D063860

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A155300.000000%
B155300.000000%
C155300.000000%
D155325516.419833%

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 1553 1553 0 0 0.00% 0.00%
B 1553 1553 1 1 0.06% 0.06%
C 1553 1553 0 0 0.00% 0.00%
D 1553 1553 259 259 16.68% 16.68%

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 12 194 1636 42.13 162 159 35.1
A 0 226 1615 41.53 162 159 35.1
A 8 15 1593 40.9 162 159 35.1
B 15 204 8650 257.77 165 161 32.9
B 5 200 3013 86.6 165 161 32.9
B 12 111 2890 82.87 165 161 32.9
C 14 67 8053 201.79 161 162 39.1
C 9 54 4951 122.47 161 162 39.1
C 13 61 1278 28.54 161 162 39.1
D 8 112 1046198 28349.47 148 144 36.9
D 13 239 90737 2455.19 148 144 36.9
D 12 233 40379 1090.42 148 144 36.9

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