ASTROSAT CZTI

Data Quality Report

Orbit 01308

Creation date: 2024-06-27T14:10:45.462778
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/AS1G04_002T02_9000000230_01308cztM0_level2.evt modeM0/AS1G04_002T02_9000000230_01308cztM0_level2_quad_clean.evt
Size (bytes)1,469,566,080104,480,640
Size1.4 GB 99.6 MB
Events in quadrant A9,400,169683,987
Events in quadrant B9,976,308695,731
Events in quadrant C9,127,104675,376
Events in quadrant D15,528,629606,369

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330683
B0347102
C0322332
D0514022

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72052613.622484%
B7205500.693963%
C7205510.707842%
D7205148620.624566%

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 7235 7207 632 632 8.74% 8.77%
B 7235 7207 611 611 8.45% 8.48%
C 7235 7207 416 416 5.75% 5.77%
D 7235 7207 3789 3789 52.37% 52.57%

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 4 32 598640 1095.93 2249 2265 544.2
A 12 189 77978 139.13 2249 2265 544.2
A 15 233 39148 67.78 2249 2265 544.2
B 8 4 617777 1104.88 2349 2361 557.0
B 12 52 179099 317.31 2349 2361 557.0
B 15 22 85564 149.38 2349 2361 557.0
C 15 241 359010 597.15 2130 2201 597.5
C 3 9 319562 531.13 2130 2201 597.5
C 8 208 54870 88.15 2130 2201 597.5
D 13 169 7745771 12401.14 1994 2065 624.4
D 10 84 260378 413.67 1994 2065 624.4
D 10 215 20839 30.06 1994 2065 624.4

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