ASTROSAT CZTI

Data Quality Report

Orbit 00684

Creation date: 2024-06-27T14:01:31.059069
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/AS1P01_147T02_9000000098_00684cztM0_level2.evt modeM0/AS1P01_147T02_9000000098_00684cztM0_level2_quad_clean.evt
Size (bytes)1,509,301,44072,538,560
Size1.4 GB 69.2 MB
Events in quadrant A9,344,468442,452
Events in quadrant B9,665,223428,343
Events in quadrant C17,508,610382,813
Events in quadrant D8,701,058425,231

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330201
B0340071
C0580061
D0311222

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74591051.407695%
B7297921.260792%
C7459411955.221880%
D74581131.515152%

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 7474 7460 543 543 7.27% 7.28%
B 7474 7298 623 623 8.34% 8.54%
C 7474 7460 4765 4765 63.75% 63.87%
D 7473 7459 496 496 6.64% 6.65%

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 15 171 109182 182.88 2395 2410 583.8
A 10 233 44731 72.49 2395 2410 583.8
A 11 79 9606 12.33 2395 2410 583.8
B 7 221 114599 192.43 2428 2439 582.9
B 14 53 100436 168.13 2428 2439 582.9
B 8 38 90592 151.24 2428 2439 582.9
C 3 191 7614477 13586.8 2002 2071 560.3
C 3 127 681590 1212.82 2002 2071 560.3
C 3 95 301789 534.94 2002 2071 560.3
D 1 4 246090 360.34 2173 2255 676.7
D 13 101 177447 258.9 2173 2255 676.7
D 0 25 105025 151.87 2173 2255 676.7

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