ASTROSAT CZTI

Data Quality Report

Orbit 27989

Creation date: 2024-06-27T19:46:47.830630
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_065T03_9000004040_27989cztM0_level2.evt modeM0/AS1A10_065T03_9000004040_27989cztM0_level2_quad_clean.evt
Size (bytes)487,834,56087,410,880
Size465.2 MB 83.4 MB
Events in quadrant A3,299,479560,718
Events in quadrant B3,424,943556,255
Events in quadrant C3,539,558525,952
Events in quadrant D4,047,392529,263

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139260
B0143660
C0146230
D0159530

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6809350.514026%
B6809570.837127%
C6809971.424585%
D68091452.129534%

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 7724 6809 0 0 0.00% 0.00%
B 7724 6809 1 1 0.01% 0.01%
C 7724 6809 10 10 0.13% 0.15%
D 7724 6809 104 104 1.35% 1.53%

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 8 192 9891 52.93 852 836 171.1
A 13 254 9298 49.46 852 836 171.1
A 3 137 8221 43.17 852 836 171.1
B 10 245 91144 554.36 845 823 162.9
B 12 111 20469 120.58 845 823 162.9
B 11 111 18882 110.84 845 823 162.9
C 3 233 132448 681.85 819 824 193.0
C 14 238 130681 672.7 819 824 193.0
C 10 22 81635 418.63 819 824 193.0
D 1 52 417797 2110.87 826 806 197.5
D 8 195 309100 1560.63 826 806 197.5
D 7 80 142827 718.93 826 806 197.5

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