ASTROSAT CZTI

Data Quality Report

Orbit 29899

Creation date: 2024-06-27T20:08:54.760787
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_102T04_9000004286_29899cztM0_level2.evt modeM0/AS1A10_102T04_9000004286_29899cztM0_level2_quad_clean.evt
Size (bytes)998,795,520137,917,440
Size952.5 MB 131.5 MB
Events in quadrant A5,355,478866,864
Events in quadrant B8,398,120870,365
Events in quadrant C7,493,525852,727
Events in quadrant D8,244,864810,100

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02260
B02260
C02260
D02260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229362
B0337922
C0300422
D0317902

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11229890.792591%
B112291621.442693%
C112292732.431205%
D112285865.219095%

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 12524 11231 0 0 0.00% 0.00%
B 12524 11231 1 1 0.01% 0.01%
C 12524 11231 18 18 0.14% 0.16%
D 12523 11230 448 448 3.58% 3.99%

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 24329 82.99 1376 1346 276.9
A 1 113 23426 79.73 1376 1346 276.9
A 13 254 18678 62.58 1376 1346 276.9
B 6 159 3038734 11559.86 1357 1324 262.8
B 12 111 33151 121.13 1357 1324 262.8
B 11 111 31097 113.31 1357 1324 262.8
C 3 233 2017790 6564.86 1314 1323 307.2
C 14 238 218056 705.6 1314 1323 307.2
C 10 22 62461 199.04 1314 1323 307.2
D 7 80 2362464 7509.09 1311 1274 314.4
D 8 195 447913 1420.41 1311 1274 314.4
D 2 250 173209 546.79 1311 1274 314.4

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