ASTROSAT CZTI

Data Quality Report

Orbit 36892

Creation date: 2024-06-27T21:32:53.287647
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/AS1A11_075T01_9000005244_36892cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36892cztM0_level2_quad_clean.evt
Size (bytes)869,232,960107,640,000
Size829.0 MB 102.7 MB
Events in quadrant A6,045,557801,768
Events in quadrant B1,921,09813,718
Events in quadrant C6,081,020811,030
Events in quadrant D11,414,133760,624

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02560
B02560
C02560
D02560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0259183
B0127753
C0257253
D0426153

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12567270.214848%
B1256712567100.000000%
C12567290.230763%
D1256710788.578022%

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 15313 12569 9 9 0.06% 0.07%
B 15312 12566 1 1 0.01% 0.01%
C 15313 12569 22 22 0.14% 0.18%
D 15313 12569 965 965 6.30% 7.68%

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 10 83 473219 1668.81 1400 1371 282.7
A 9 143 63934 221.27 1400 1371 282.7
A 13 248 53157 183.15 1400 1371 282.7
B 12 243 1741186 226311.02 29 28 7.7
B 12 144 33363 4332.79 29 28 7.7
B 0 229 11333 1469.39 29 28 7.7
C 15 214 544390 1715.44 1363 1375 316.5
C 0 10 198348 622.26 1363 1375 316.5
C 13 61 9133 24.51 1363 1375 316.5
D 12 235 3680879 11346.24 1325 1288 324.3
D 13 249 897982 2765.01 1325 1288 324.3
D 10 253 597805 1839.39 1325 1288 324.3

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