ASTROSAT CZTI

Data Quality Report

Orbit 27675

Creation date: 2024-06-27T19:42:51.847585
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/AS1T03_257T01_9000003976_27675cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27675cztM0_level2_quad_clean.evt
Size (bytes)707,630,40092,963,520
Size674.8 MB 88.7 MB
Events in quadrant A3,156,869641,801
Events in quadrant B3,316,248664,491
Events in quadrant C3,353,788618,935
Events in quadrant D11,190,531463,247

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131640
B0136050
C0137070
D0374030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6107340.556738%
B6107480.785983%
C6107831.359096%
D6107340755.788439%

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 7432 6108 4 4 0.05% 0.07%
B 7432 6107 4 4 0.05% 0.07%
C 7432 6107 3 3 0.04% 0.05%
D 7431 6106 3372 3372 45.38% 55.22%

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 8 192 14890 87.77 812 798 160.6
A 13 254 10986 63.45 812 798 160.6
A 13 248 7028 38.8 812 798 160.6
B 3 64 74184 483.09 815 797 151.9
B 0 230 35581 228.98 815 797 151.9
B 12 111 17285 108.54 815 797 151.9
C 3 233 150490 821.63 783 790 182.2
C 14 238 128507 700.98 783 790 182.2
C 15 208 15336 79.84 783 790 182.2
D 12 2 7550360 63431.29 507 495 119.0
D 1 52 1120836 9412.71 507 495 119.0
D 2 250 354377 2973.19 507 495 119.0

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