ASTROSAT CZTI

Data Quality Report

Orbit 29427

Creation date: 2024-06-27T20:04:02.425881
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/AS1A10_102T05_9000004232_29427cztM0_level2.evt modeM0/AS1A10_102T05_9000004232_29427cztM0_level2_quad_clean.evt
Size (bytes)826,459,20099,043,200
Size788.2 MB 94.5 MB
Events in quadrant A3,333,986674,825
Events in quadrant B3,517,307694,080
Events in quadrant C9,968,249592,236
Events in quadrant D7,782,420594,020

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134381
B0142042
C0340581
D0275401

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6354290.456405%
B6354600.944287%
C6354173627.321372%
D635499115.596475%

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 7679 6355 0 0 0.00% 0.00%
B 7679 6355 3 3 0.04% 0.05%
C 7679 6355 1092 1092 14.22% 17.18%
D 7679 6355 911 911 11.86% 14.34%

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 11098 60.24 864 852 170.1
A 3 137 7543 39.34 864 852 170.1
A 0 226 7333 38.1 864 852 170.1
B 15 33 86013 533.35 857 837 159.7
B 12 111 18999 113.73 857 837 159.7
B 0 229 18205 108.75 857 837 159.7
C 3 233 6795875 38290.4 777 784 177.5
C 14 238 127341 713.15 777 784 177.5
C 2 114 14119 75.14 777 784 177.5
D 1 52 4084836 22057.53 793 777 185.2
D 8 195 356850 1923.11 793 777 185.2
D 13 153 214079 1152.02 793 777 185.2

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