ASTROSAT CZTI

Data Quality Report

Orbit 12471

Creation date: 2024-06-27T16:27:51.821182
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_174T01_9000001850_12471cztM0_level2.evt modeM0/AS1A04_174T01_9000001850_12471cztM0_level2_quad_clean.evt
Size (bytes)834,681,600101,583,360
Size796.0 MB 96.9 MB
Events in quadrant A13,094,655549,067
Events in quadrant B4,017,597696,562
Events in quadrant C3,245,017694,499
Events in quadrant D4,453,805653,260

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0436683
B0163952
C0141812
D0178752

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6906440563.785114%
B69062022.924993%
C6906240.347524%
D69071031.491241%

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 7842 6907 3004 3004 38.31% 43.49%
B 7842 6908 89 89 1.13% 1.29%
C 7842 6908 1 1 0.01% 0.01%
D 7843 6909 42 42 0.54% 0.61%

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 13 251 8971784 61274.49 707 693 146.4
A 0 23 1094891 7473.61 707 693 146.4
A 15 239 85726 580.79 707 693 146.4
B 4 239 499076 3087.45 846 828 161.4
B 11 51 39175 237.62 846 828 161.4
B 3 209 36842 223.16 846 828 161.4
C 13 61 5999 26.96 828 836 191.5
C 8 128 5682 25.3 828 836 191.5
C 14 234 5620 24.98 828 836 191.5
D 1 52 1097175 5490.45 826 805 199.7
D 7 71 77332 383.24 826 805 199.7
D 13 104 66725 330.12 826 805 199.7

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