ASTROSAT CZTI

Data Quality Report

Orbit 43839

Creation date: 2024-06-27T22:56:25.376443
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/AS1A13_018T01_9000005906_43839cztM0_level2.fits modeM0/AS1A13_018T01_9000005906_43839cztM0_level2_quad_clean.evt
Size (bytes)623,059,20096,667,200
Size594.2 MB 92.2 MB
Events in quadrant A5,828,603623,904
Events in quadrant B3,409,782701,888
Events in quadrant C6,070,732649,464
Events in quadrant D7,273,156517,793

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0218131
B0141011
C0224465
D0259023

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A621677212.419562%
B62172113.393920%
C62165719.185972%
D6215131321.126307%

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 6846 6216 320 320 4.67% 5.15%
B 6847 6217 46 46 0.67% 0.74%
C 6846 6216 382 382 5.58% 6.15%
D 6846 6216 1220 1220 17.82% 19.63%

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 15 223 1998667 13969.64 690 676 143.0
A 10 83 897988 6273.86 690 676 143.0
A 15 222 124085 862.85 690 676 143.0
B 4 170 153968 1082.87 713 691 141.5
B 5 172 100111 702.38 713 691 141.5
B 7 205 83804 587.17 713 691 141.5
C 3 233 3253564 20077.94 685 688 162.0
C 15 158 68360 417.7 685 688 162.0
C 15 157 36089 218.51 685 688 162.0
D 5 235 1264794 7721.02 639 618 163.7
D 4 221 1134044 6922.46 639 618 163.7
D 1 52 762102 4650.8 639 618 163.7

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