ASTROSAT CZTI

Data Quality Report

Orbit 20431

Creation date: 2024-06-27T18:15:20.523184
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_188T01_9000003018_20431cztM0_level2.evt modeM0/AS1A05_188T01_9000003018_20431cztM0_level2_quad_clean.evt
Size (bytes)879,298,560167,045,760
Size838.6 MB 159.3 MB
Events in quadrant A5,811,3461,073,032
Events in quadrant B6,929,9531,067,389
Events in quadrant C5,826,7611,035,622
Events in quadrant D7,214,0161,017,469

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02540
B02540
C02540
D02540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0254482
B0286182
C0255522
D0295822

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A125201030.822684%
B125211971.573357%
C125211210.966376%
D125213632.899129%

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 13645 12521 0 0 0.00% 0.00%
B 13646 12523 71 71 0.52% 0.57%
C 13646 12523 0 0 0.00% 0.00%
D 13646 12522 311 311 2.28% 2.48%

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 0 226 13418 39.51 1506 1475 302.3
A 3 137 12750 37.3 1506 1475 302.3
A 12 194 11105 31.86 1506 1475 302.3
B 10 245 1001403 3520.37 1481 1441 284.1
B 12 111 35424 119.64 1481 1441 284.1
B 11 111 31624 106.26 1481 1441 284.1
C 14 238 225317 666.56 1432 1441 335.9
C 13 61 9927 25.27 1432 1441 335.9
C 3 233 9701 24.59 1432 1441 335.9
D 2 16 895464 2516.93 1460 1416 355.2
D 1 52 646215 1815.24 1460 1416 355.2
D 13 153 106475 295.76 1460 1416 355.2

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