ASTROSAT CZTI

Data Quality Report

Orbit 34580

Creation date: 2022-02-19T14:23:25.708532
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/AS1A05_167T01_9000004940_34580cztM0_level2.evt modeM0/AS1A05_167T01_9000004940_34580cztM0_level2_quad_clean.evt
Size (bytes)424,160,64067,121,280
Size404.5 MB 64.0 MB
Events in quadrant A2,515,501429,572
Events in quadrant B2,833,734439,071
Events in quadrant C2,608,116428,878
Events in quadrant D4,555,368390,408

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01046
B01046
C01057
D01046

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010574353
B011613414
C010707385
D017784639

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4929120.243457%
B4913601.221250%
C4913100.203542%
D49002465.020408%

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 7073 4978 8 8 0.11% 0.16%
B 7073 4978 45 45 0.64% 0.90%
C 7073 4965 4 4 0.06% 0.08%
D 7073 4958 197 197 2.79% 3.97%

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 9 143 37727 296.47 627 616 125.2
A 10 83 29177 228.17 627 616 125.2
A 15 174 19624 151.85 627 616 125.2
B 5 172 200506 1710.74 614 599 116.9
B 0 189 86071 731.44 614 599 116.9
B 0 245 43407 366.34 614 599 116.9
C 15 214 209028 1504.27 601 605 138.6
C 0 10 38684 274.83 601 605 138.6
C 14 67 10310 70.04 601 605 138.6
D 8 195 1252413 8653.82 590 576 144.7
D 1 52 509312 3516.84 590 576 144.7
D 2 249 168777 1162.76 590 576 144.7

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