ASTROSAT CZTI

Data Quality Report

Orbit 09814

Creation date: 2024-06-27T15:50:57.041395
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/AS1G05_218T01_9000001394_09814cztM0_level2.evt modeM0/AS1G05_218T01_9000001394_09814cztM0_level2_quad_clean.evt
Size (bytes)771,497,280145,465,920
Size735.8 MB 138.7 MB
Events in quadrant A5,450,429915,531
Events in quadrant B5,573,909942,239
Events in quadrant C5,289,886900,928
Events in quadrant D6,291,291870,922

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02280
B02280
C02280
D02280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232754
B0235643
C0232053
D0263613

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11213920.820476%
B112131391.239633%
C11213660.588603%
D11213960.856149%

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 13784 11216 1 1 0.01% 0.01%
B 13784 11216 4 4 0.03% 0.04%
C 13784 11216 0 0 0.00% 0.00%
D 13784 11216 46 46 0.33% 0.41%

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 1 162 21848 72.3 1403 1373 283.2
A 0 226 13011 41.09 1403 1373 283.2
A 12 194 11174 34.61 1403 1373 283.2
B 0 85 56652 207.13 1402 1371 266.9
B 4 173 39500 142.86 1402 1371 266.9
B 12 111 30300 108.39 1402 1371 266.9
C 0 207 36149 112.77 1341 1352 308.6
C 10 22 22669 69.08 1341 1352 308.6
C 13 61 10001 28.03 1341 1352 308.6
D 1 52 850685 2455.18 1334 1307 346.0
D 2 152 94522 269.44 1334 1307 346.0
D 2 16 78753 223.86 1334 1307 346.0

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