ASTROSAT CZTI

Data Quality Report

Orbit 26917

Creation date: 2024-06-27T19:34:28.569336
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/AS1A09_134T01_9000003896_26917cztM0_level2.evt modeM0/AS1A09_134T01_9000003896_26917cztM0_level2_quad_clean.evt
Size (bytes)820,359,36092,678,400
Size782.4 MB 88.4 MB
Events in quadrant A3,486,371653,352
Events in quadrant B12,320,352415,747
Events in quadrant C3,365,652640,895
Events in quadrant D5,196,008605,252

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147250
B0414230
C0145370
D0201340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7040350.497159%
B7040447663.579545%
C7040741.051136%
D70403074.360795%

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 7850 7041 0 0 0.00% 0.00%
B 7849 7039 3451 3451 43.97% 49.03%
C 7850 7040 3 3 0.04% 0.04%
D 7850 7041 265 265 3.38% 3.76%

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 0 13 141789 815.75 856 838 172.8
A 5 168 43619 247.59 856 838 172.8
A 13 254 11593 62.24 856 838 172.8
B 3 64 10023795 120324.22 426 416 83.3
B 0 189 282038 3380.69 426 416 83.3
B 0 190 91276 1090.72 426 416 83.3
C 14 238 132025 679.35 816 820 193.1
C 0 207 31826 160.54 816 820 193.1
C 2 16 16173 79.49 816 820 193.1
D 7 80 977606 4840.03 802 783 201.8
D 1 52 538599 2664.81 802 783 201.8
D 15 36 259358 1281.2 802 783 201.8

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