ASTROSAT CZTI

Data Quality Report

Orbit 23476

Creation date: 2024-06-27T18:54:55.512587
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/AS1A07_148T02_9000003474_23476cztM0_level2.evt modeM0/AS1A07_148T02_9000003474_23476cztM0_level2_quad_clean.evt
Size (bytes)570,504,96088,873,920
Size544.1 MB 84.8 MB
Events in quadrant A3,033,831576,195
Events in quadrant B3,153,760592,626
Events in quadrant C3,151,118574,711
Events in quadrant D7,534,430530,263

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125151
B0129311
C0127751
D0264151

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5982410.685390%
B5982570.952859%
C5983570.952699%
D5983108218.084573%

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 7227 5982 1 1 0.01% 0.02%
B 7227 5982 7 7 0.10% 0.12%
C 7228 5983 0 0 0.00% 0.00%
D 7228 5983 968 968 13.39% 16.18%

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 13 254 9620 56.22 786 769 157.4
A 0 226 6768 38.11 786 769 157.4
A 3 137 6482 36.29 786 769 157.4
B 0 189 79402 534.73 780 763 147.1
B 12 111 17096 111.06 780 763 147.1
B 11 111 15083 97.37 780 763 147.1
C 14 238 121166 674.57 767 775 178.5
C 7 247 28387 154.71 767 775 178.5
C 2 16 7328 36.72 767 775 178.5
D 7 238 3268240 18999.93 709 692 172.0
D 1 52 1571961 9136.51 709 692 172.0
D 2 234 20819 117.03 709 692 172.0

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