ASTROSAT CZTI

Data Quality Report

Orbit 14892

Creation date: 2024-06-27T17:00:59.311233
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/AS1T02_054T01_9000002200_14892cztM0_level2.evt modeM0/AS1T02_054T01_9000002200_14892cztM0_level2_quad_clean.evt
Size (bytes)603,429,120102,093,120
Size575.5 MB 97.4 MB
Events in quadrant A2,890,418697,372
Events in quadrant B3,634,624685,336
Events in quadrant C2,979,706707,180
Events in quadrant D8,372,790591,404

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123030
B0144680
C0124400
D0287180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5870470.800681%
B58712554.343383%
C5871520.885709%
D5871186931.834440%

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 7075 5871 7 7 0.10% 0.12%
B 7076 5872 164 164 2.32% 2.79%
C 7076 5872 0 0 0.00% 0.00%
D 7076 5872 1675 1675 23.67% 28.53%

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 11 29 21171 139.73 736 720 146.4
A 9 143 15656 102.05 736 720 146.4
A 14 237 12609 81.23 736 720 146.4
B 3 64 571809 4314.77 714 696 132.4
B 0 189 154751 1163.89 714 696 132.4
B 10 246 67617 505.59 714 696 132.4
C 3 233 136138 822.23 726 730 164.7
C 0 207 14278 82.27 726 730 164.7
C 13 61 5056 26.27 726 730 164.7
D 7 254 5869634 38650.03 644 630 151.8
D 13 104 36927 239.03 644 630 151.8
D 2 234 18076 114.89 644 630 151.8

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