ASTROSAT CZTI

Data Quality Report

Orbit 27858

Creation date: 2024-06-27T19:45:16.073187
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_9000004024_27858cztM0_level2.evt modeM0/AS1A10_002T05_9000004024_27858cztM0_level2_quad_clean.evt
Size (bytes)1,369,664,640219,787,200
Size1.3 GB 209.6 MB
Events in quadrant A8,887,4951,394,761
Events in quadrant B9,106,0091,377,513
Events in quadrant C9,045,5451,332,131
Events in quadrant D13,195,3761,280,556

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380370
B0388160
C0383540
D0517610

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A184431470.797050%
B184431941.051890%
C184442221.203643%
D184439725.270292%

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 20418 18445 17 17 0.08% 0.09%
B 20418 18444 23 23 0.11% 0.12%
C 20419 18446 0 0 0.00% 0.00%
D 20418 18443 830 830 4.07% 4.50%

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 6 16 196024 428.15 2239 2190 452.7
A 13 254 31253 64.2 2239 2190 452.7
A 0 13 29310 59.9 2239 2190 452.7
B 0 229 120729 281.47 2210 2150 421.3
B 15 32 93926 217.85 2210 2150 421.3
B 0 190 86778 200.88 2210 2150 421.3
C 14 238 341043 668.56 2149 2159 506.9
C 3 233 283012 554.08 2149 2159 506.9
C 15 208 35443 65.66 2149 2159 506.9
D 1 52 3970991 7775.99 2132 2072 510.4
D 2 250 1089438 2130.39 2132 2072 510.4
D 2 234 78632 150.0 2132 2072 510.4

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