ASTROSAT CZTI

Data Quality Report

Orbit 23440

Creation date: 2024-06-27T18:54:50.207314
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_127T01_9000003468_23440cztM0_level2.evt modeM0/AS1A07_127T01_9000003468_23440cztM0_level2_quad_clean.evt
Size (bytes)563,760,00087,943,680
Size537.6 MB 83.9 MB
Events in quadrant A3,354,846556,266
Events in quadrant B3,586,861559,443
Events in quadrant C3,542,584540,513
Events in quadrant D6,108,353512,973

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145531
B0151511
C0149141
D0230484

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7090270.380818%
B70911001.410238%
C7091971.367931%
D709075810.691114%

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 7435 7091 0 0 0.00% 0.00%
B 7436 7092 13 13 0.17% 0.18%
C 7436 7092 5 5 0.07% 0.07%
D 7435 7090 694 694 9.33% 9.79%

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 11372 59.61 868 849 176.5
A 3 137 7649 38.52 868 849 176.5
A 0 226 7536 37.88 868 849 176.5
B 0 189 81998 491.05 859 837 165.3
B 0 190 78115 467.56 859 837 165.3
B 0 228 32247 190.04 859 837 165.3
C 10 9 139046 705.23 831 836 196.0
C 14 238 130153 659.85 831 836 196.0
C 7 247 10162 47.59 831 836 196.0
D 1 52 2656352 13246.34 816 792 200.5
D 12 233 158515 786.75 816 792 200.5
D 7 238 145640 722.52 816 792 200.5

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