ASTROSAT CZTI

Data Quality Report

Orbit 45860

Creation date: 2024-06-27T23:17:00.951947
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/AS1T05_187T01_9000006132_45860cztM0_level2.fits modeM0/AS1T05_187T01_9000006132_45860cztM0_level2_quad_clean.evt
Size (bytes)843,042,240119,108,160
Size804.0 MB 113.6 MB
Events in quadrant A7,203,576869,299
Events in quadrant B12,459,407606,749
Events in quadrant C3,591,422872,939
Events in quadrant D7,318,668687,797

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0269582
B0427352
C0166312
D0274362

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81872903.542201%
B8188321739.289204%
C8188280.341964%
D8187120314.694027%

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 9632 8189 43 43 0.45% 0.53%
B 9633 8188 1998 1998 20.74% 24.40%
C 9633 8190 0 0 0.00% 0.00%
D 9632 8187 975 975 10.12% 11.91%

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 3515236 18232.01 924 904 192.8
A 14 254 38449 194.78 924 904 192.8
A 14 238 23830 118.94 924 904 192.8
B 3 112 8163796 51295.54 808 783 159.1
B 4 171 438729 2752.01 808 783 159.1
B 0 171 218882 1370.51 808 783 159.1
C 12 2 26328 118.2 911 916 215.0
C 3 233 8279 34.25 911 916 215.0
C 13 61 5963 23.48 911 916 215.0
D 13 249 2473054 11537.64 845 816 214.3
D 6 143 374308 1743.04 845 816 214.3
D 12 2 216692 1007.47 845 816 214.3

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