ASTROSAT CZTI

Data Quality Report

Orbit 27754

Creation date: 2024-06-27T19:43:56.404713
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_002T05_9000004000_27754cztM0_level2.evt modeM0/AS1A10_002T05_9000004000_27754cztM0_level2_quad_clean.evt
Size (bytes)521,092,80089,775,360
Size497.0 MB 85.6 MB
Events in quadrant A3,634,187556,989
Events in quadrant B3,707,927555,782
Events in quadrant C3,879,629539,736
Events in quadrant D4,037,693531,491

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158800
B0160020
C0163440
D0174480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76881091.417794%
B76881662.159209%
C76881642.133195%
D7689730.949408%

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 8288 7689 0 0 0.00% 0.00%
B 8288 7689 0 0 0.00% 0.00%
C 8288 7689 7 7 0.08% 0.09%
D 8289 7691 19 19 0.23% 0.25%

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 13 254 13768 67.93 937 917 189.2
A 8 192 11782 57.44 937 917 189.2
A 3 137 9186 43.71 937 917 189.2
B 12 111 22899 122.4 932 905 179.7
B 11 111 20594 109.57 932 905 179.7
B 14 111 18516 98.01 932 905 179.7
C 14 238 143264 660.58 906 908 215.5
C 3 233 109488 503.85 906 908 215.5
C 15 208 89295 410.14 906 908 215.5
D 1 52 472082 2168.26 910 883 217.3
D 2 250 93556 426.44 910 883 217.3
D 2 234 32083 143.57 910 883 217.3

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