ASTROSAT CZTI

Data Quality Report

Orbit 19592

Creation date: 2024-06-27T18:04:32.818855
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_115T01_9000002914_19592cztM0_level2.evt modeM0/AS1T03_115T01_9000002914_19592cztM0_level2_quad_clean.evt
Size (bytes)1,244,059,200240,958,080
Size1.2 GB 229.8 MB
Events in quadrant A8,541,9351,533,939
Events in quadrant B9,005,5681,537,176
Events in quadrant C8,673,3751,490,381
Events in quadrant D10,209,8971,467,566

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03740
B03740
C03740
D03740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0376273
B0388013
C0376243
D0427393

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A184211100.597145%
B184221600.868527%
C184221901.031376%
D184212691.460290%

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 20356 18424 12 12 0.06% 0.07%
B 20357 18423 44 44 0.22% 0.24%
C 20357 18424 0 0 0.00% 0.00%
D 20356 18424 160 160 0.79% 0.87%

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 9 143 67165 148.71 2183 2138 437.3
A 13 254 25721 53.93 2183 2138 437.3
A 11 47 21932 45.27 2183 2138 437.3
B 7 220 104878 249.86 2173 2115 411.3
B 4 216 100251 238.61 2173 2115 411.3
B 0 197 67297 158.49 2173 2115 411.3
C 14 238 325601 663.29 2091 2107 487.7
C 3 233 88684 177.52 2091 2107 487.7
C 7 247 43481 84.83 2091 2107 487.7
D 1 52 796818 1534.79 2118 2056 517.8
D 7 238 680971 1311.08 2118 2056 517.8
D 9 1 269716 516.89 2118 2056 517.8

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