ASTROSAT CZTI

Data Quality Report

Orbit 36187

Creation date: 2022-06-08T15:33:27.580452
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_071T50_9000005166_36187cztM0_level2.evt modeM0/AS1A10_071T50_9000005166_36187cztM0_level2_quad_clean.evt
Size (bytes)16,076,1603,087,360
Size15.3 MB 2.9 MB
Events in quadrant A109,16120,044
Events in quadrant B171,80716,901
Events in quadrant C103,97319,604
Events in quadrant D89,45518,912

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04301
B06101
C04041
D03501

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13032.307692%
B1304030.769231%
C13053.846154%
D13053.846154%

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 130 130 1 1 0.77% 0.77%
B 130 130 29 29 22.31% 22.31%
C 130 130 1 1 0.77% 0.77%
D 130 130 2 2 1.54% 1.54%

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 10 83 35036 6437.15 17 17 5.4
A 9 143 2166 395.03 17 17 5.4
A 10 67 2161 394.11 17 17 5.4
B 5 236 104546 22037.47 14 14 4.7
B 5 200 5072 1066.33 14 14 4.7
B 0 213 2697 565.63 14 14 4.7
C 0 10 27044 4720.23 17 17 5.7
C 15 214 8100 1411.69 17 17 5.7
C 1 23 748 127.67 17 17 5.7
D 2 153 9504 1559.78 17 16 6.1
D 12 235 8201 1345.58 17 16 6.1
D 2 120 2593 423.65 17 16 6.1

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