ASTROSAT CZTI

Data Quality Report

Orbit 11653

Creation date: 2024-06-27T16:16:29.553840
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/AS1A04_037T01_9000001716_11653cztM0_level2.evt modeM0/AS1A04_037T01_9000001716_11653cztM0_level2_quad_clean.evt
Size (bytes)543,067,20069,494,400
Size517.9 MB 66.3 MB
Events in quadrant A4,164,472412,779
Events in quadrant B3,508,057421,350
Events in quadrant C3,208,959416,769
Events in quadrant D5,124,065399,511

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166993
B0142902
C0136952
D0192622

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65072503.842016%
B65072213.396342%
C65071281.967112%
D65076009.220839%

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 7542 6508 27 27 0.36% 0.41%
B 7542 6508 25 25 0.33% 0.38%
C 7542 6508 0 0 0.00% 0.00%
D 7542 6508 298 298 3.95% 4.58%

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 8 5 559541 3287.87 833 813 169.9
A 1 162 145713 852.67 833 813 169.9
A 1 178 84524 492.6 833 813 169.9
B 4 239 185796 1157.39 834 813 159.8
B 15 204 47672 293.19 834 813 159.8
B 12 111 18794 112.5 834 813 159.8
C 13 61 5956 27.06 823 827 189.5
C 14 234 2384 8.21 823 827 189.5
C 3 202 1953 5.94 823 827 189.5
D 13 104 1333960 6931.94 801 777 192.3
D 13 122 291004 1509.05 801 777 192.3
D 8 195 255812 1326.07 801 777 192.3

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