ASTROSAT CZTI

Data Quality Report

Orbit 21784

Creation date: 2024-06-27T18:32:06.170676
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/AS1A07_005T01_9000003224_21784cztM0_level2.evt modeM0/AS1A07_005T01_9000003224_21784cztM0_level2_quad_clean.evt
Size (bytes)226,071,36020,908,800
Size215.6 MB 19.9 MB
Events in quadrant A1,039,637132,938
Events in quadrant B1,127,532137,991
Events in quadrant C1,041,708126,835
Events in quadrant D3,508,85098,300

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A042950
B046270
C042630
D0116810

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186240.214823%
B1862120.644468%
C1862180.966702%
D1863123066.022544%

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 1862 1862 0 0 0.00% 0.00%
B 1862 1862 4 4 0.21% 0.21%
C 1862 1862 0 0 0.00% 0.00%
D 1863 1863 1153 1153 61.89% 61.89%

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 3829 64.74 269 265 55.1
A 0 226 2424 39.22 269 265 55.1
A 12 194 1905 29.79 269 265 55.1
B 0 190 27532 533.08 271 266 51.1
B 3 64 16150 310.55 271 266 51.1
B 0 230 11467 218.99 271 266 51.1
C 14 238 41290 683.64 255 257 60.0
C 4 223 2826 42.8 255 257 60.0
C 13 61 1852 26.57 255 257 60.0
D 7 238 2705235 57532.74 187 181 47.0
D 1 52 49858 1056.56 187 181 47.0
D 7 223 15406 323.81 187 181 47.0

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