ASTROSAT CZTI

Data Quality Report

Orbit 29726

Creation date: 2024-06-27T20:07:10.342884
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_007T01_9000004276_29726cztM0_level2.evt modeM0/AS1A10_007T01_9000004276_29726cztM0_level2_quad_clean.evt
Size (bytes)2,031,422,400244,563,840
Size1.9 GB 233.2 MB
Events in quadrant A9,458,8051,555,755
Events in quadrant B16,565,4321,554,850
Events in quadrant C11,358,5901,534,768
Events in quadrant D22,802,6061,391,174

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04040
B04040
C04040
D04040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0407304
B0634054
C0456794
D0818784

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A198923011.513171%
B198929634.841142%
C198926473.252564%
D19892355917.891615%

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 22317 19892 0 0 0.00% 0.00%
B 22317 19892 365 365 1.64% 1.83%
C 22317 19892 126 126 0.56% 0.63%
D 22317 19892 3206 3206 14.37% 16.12%

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 37094 70.39 2449 2395 492.9
A 3 137 25437 46.74 2449 2395 492.9
A 0 226 20495 36.72 2449 2395 492.9
B 6 159 5604324 12129.71 2397 2332 461.8
B 10 245 1048202 2264.57 2397 2332 461.8
B 0 229 371030 798.32 2397 2332 461.8
C 3 233 1095328 1984.52 2357 2374 550.7
C 10 22 525439 949.75 2357 2374 550.7
C 14 238 393376 709.96 2357 2374 550.7
D 7 223 6363205 12327.98 2155 2100 516.0
D 8 195 4689368 9084.04 2155 2100 516.0
D 7 80 2939370 5692.5 2155 2100 516.0

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