ASTROSAT CZTI

Data Quality Report

Orbit 30015

Creation date: 2024-06-27T20:09:53.960765
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/AS1A10_071T02_9000004312_30015cztM0_level2.evt modeM0/AS1A10_071T02_9000004312_30015cztM0_level2_quad_clean.evt
Size (bytes)1,017,976,320176,261,760
Size970.8 MB 168.1 MB
Events in quadrant A6,517,8531,129,976
Events in quadrant B10,469,7311,131,685
Events in quadrant C6,486,6421,075,739
Events in quadrant D6,474,9651,100,509

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02680
B02680
C02680
D02680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0279753
B0410863
C0276963
D0280173

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A130241341.028870%
B130244283.286241%
C130244093.140356%
D13024820.629607%

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 14144 13027 2 2 0.01% 0.02%
B 14144 13027 100 100 0.71% 0.77%
C 14144 13027 0 0 0.00% 0.00%
D 14144 13027 17 17 0.12% 0.13%

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 5 203 57219 166.46 1657 1625 334.0
A 8 192 45791 132.24 1657 1625 334.0
A 13 254 22581 62.75 1657 1625 334.0
B 6 159 3607741 11654.0 1600 1560 309.4
B 6 36 525250 1692.4 1600 1560 309.4
B 12 111 38965 120.88 1600 1560 309.4
C 14 238 287249 779.51 1543 1551 366.5
C 3 233 95464 256.24 1543 1551 366.5
C 14 254 63375 168.68 1543 1551 366.5
D 8 195 285851 738.16 1594 1561 385.1
D 7 80 66388 168.32 1594 1561 385.1
D 2 234 58502 147.85 1594 1561 385.1

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