ASTROSAT CZTI

Data Quality Report

Orbit 16822

Creation date: 2024-06-27T17:28:14.345686
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_140T01_9000002496_16822cztM0_level2.evt modeM0/AS1A05_140T01_9000002496_16822cztM0_level2_quad_clean.evt
Size (bytes)647,121,60071,452,800
Size617.1 MB 68.1 MB
Events in quadrant A4,043,108442,902
Events in quadrant B3,620,341449,742
Events in quadrant C4,435,831427,600
Events in quadrant D7,046,847377,111

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162342
B0148211
C0172861
D0254621

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66832914.354332%
B66831432.139758%
C66832924.369295%
D6683125518.778991%

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 7414 6685 136 136 1.83% 2.03%
B 7414 6685 9 9 0.12% 0.13%
C 7414 6685 100 100 1.35% 1.50%
D 7414 6685 859 859 11.59% 12.85%

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 840754 5008.71 830 815 167.7
A 9 143 9116 49.5 830 815 167.7
A 0 226 7399 39.26 830 815 167.7
B 10 16 123352 766.04 832 811 160.0
B 15 35 101548 629.74 832 811 160.0
B 0 229 45062 276.63 832 811 160.0
C 3 233 950708 5136.28 794 802 184.9
C 0 207 265198 1429.63 794 802 184.9
C 14 238 120751 648.58 794 802 184.9
D 1 52 3281559 17869.38 749 726 183.6
D 5 222 468534 2547.96 749 726 183.6
D 2 33 215806 1171.45 749 726 183.6

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