ASTROSAT CZTI

Data Quality Report

Orbit 35232

Creation date: 2022-04-04T20:10:39.266665
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/AS1C07_004T01_9000005052_35232cztM0_level2.evt modeM0/AS1C07_004T01_9000005052_35232cztM0_level2_quad_clean.evt
Size (bytes)826,539,84079,159,680
Size788.2 MB 75.5 MB
Events in quadrant A2,740,568598,199
Events in quadrant B8,083,187468,849
Events in quadrant C3,175,809602,041
Events in quadrant D10,694,810374,298

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111573
B0275452
C0125522
D0351302

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5017100.199322%
B5017221644.169823%
C50171372.730716%
D5017289557.703807%

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 7050 5018 1 1 0.01% 0.02%
B 7050 5018 1609 1609 22.82% 32.06%
C 7050 5018 80 80 1.13% 1.59%
D 7050 5018 2839 2839 40.27% 56.58%

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 99434 741.12 666 657 133.3
A 9 143 26032 190.39 666 657 133.3
A 12 16 20573 149.43 666 657 133.3
B 5 236 5386996 53273.28 541 529 101.1
B 5 172 525565 5192.72 541 529 101.1
B 14 207 25659 248.54 541 529 101.1
C 0 10 358191 2477.59 637 646 144.3
C 15 214 213267 1473.34 637 646 144.3
C 12 250 55498 380.09 637 646 144.3
D 8 195 4047608 34152.91 486 474 118.5
D 8 230 2800552 23629.27 486 474 118.5
D 7 80 1209119 10199.5 486 474 118.5

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