ASTROSAT CZTI

Data Quality Report

Orbit 18999

Creation date: 2024-06-27T17:57:50.494483
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/AS1A05_132T01_9000002828_18999cztM0_level2.evt modeM0/AS1A05_132T01_9000002828_18999cztM0_level2_quad_clean.evt
Size (bytes)237,939,84033,670,080
Size226.9 MB 32.1 MB
Events in quadrant A2,520,591190,983
Events in quadrant B1,470,206216,047
Events in quadrant C1,232,578212,131
Events in quadrant D1,797,993207,226

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A091610
B061970
C054040
D073610

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A268840314.992560%
B2688421.562500%
C2688150.558036%
D26891385.132019%

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 2688 2688 294 294 10.94% 10.94%
B 2688 2688 20 20 0.74% 0.74%
C 2688 2688 0 0 0.00% 0.00%
D 2689 2689 95 95 3.53% 3.53%

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 14 235 1286813 21366.31 287 281 60.2
A 0 13 115451 1912.71 287 281 60.2
A 4 2 10102 163.1 287 281 60.2
B 3 112 182397 2982.39 308 300 61.1
B 4 216 30962 502.18 308 300 61.1
B 10 245 23200 375.06 308 300 61.1
C 14 238 46389 645.3 297 299 71.4
C 8 208 17615 242.44 297 299 71.4
C 3 233 9683 131.38 297 299 71.4
D 7 238 399409 5369.23 293 284 74.3
D 9 68 187256 2515.24 293 284 74.3
D 1 52 56116 751.08 293 284 74.3

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