ASTROSAT CZTI

Data Quality Report

Orbit 16269

Creation date: 2024-06-27T17:20:26.211341
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_182T02_9000002392_16269cztM0_level2.evt modeM0/AS1A05_182T02_9000002392_16269cztM0_level2_quad_clean.evt
Size (bytes)486,172,800101,036,160
Size463.7 MB 96.4 MB
Events in quadrant A3,038,433694,552
Events in quadrant B5,429,152648,667
Events in quadrant C2,864,650666,116
Events in quadrant D3,011,596658,839

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123272
B0198091
C0117551
D0124381

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5603490.874532%
B560385815.313225%
C5603701.249331%
D5603410.731751%

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 6964 5605 5 5 0.07% 0.09%
B 6964 5605 518 518 7.44% 9.24%
C 6964 5605 0 0 0.00% 0.00%
D 6964 5605 17 17 0.24% 0.30%

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 15 174 173162 1208.0 723 711 142.8
A 9 143 83212 577.91 723 711 142.8
A 0 226 6605 41.29 723 711 142.8
B 3 112 2632830 20925.11 677 662 125.8
B 0 198 44076 345.13 677 662 125.8
B 0 189 37876 295.84 677 662 125.8
C 14 238 111068 707.03 679 684 156.1
C 3 233 102630 652.99 679 684 156.1
C 13 61 5010 27.71 679 684 156.1
D 1 52 252438 1507.77 695 675 167.0
D 10 70 89961 534.72 695 675 167.0
D 2 120 29830 174.6 695 675 167.0

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