ASTROSAT CZTI

Data Quality Report

Orbit 23618

Creation date: 2024-06-27T18:56:52.164004
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/AS1T03_178T01_9000003488_23618cztM0_level2.evt modeM0/AS1T03_178T01_9000003488_23618cztM0_level2_quad_clean.evt
Size (bytes)740,839,68089,965,440
Size706.5 MB 85.8 MB
Events in quadrant A3,254,720608,517
Events in quadrant B5,306,211573,919
Events in quadrant C3,334,063589,979
Events in quadrant D10,077,736473,265

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141652
B0203072
C0142902
D0346724

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6855390.568928%
B685679511.595683%
C6856771.123104%
D6855223032.530999%

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 8795 6856 0 0 0.00% 0.00%
B 8796 6856 526 526 5.98% 7.67%
C 8796 6857 0 0 0.00% 0.00%
D 8795 6856 2179 2179 24.78% 31.78%

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 9888 53.46 844 827 169.5
A 3 137 7887 41.65 844 827 169.5
A 0 226 7220 37.72 844 827 169.5
B 3 64 2092423 13564.35 804 782 154.2
B 0 189 20773 129.64 804 782 154.2
B 12 111 19317 120.2 804 782 154.2
C 14 238 128131 665.59 810 815 191.3
C 7 247 29529 150.11 810 815 191.3
C 0 10 23533 118.77 810 815 191.3
D 1 52 7409800 43493.44 704 684 170.4
D 2 234 23437 133.57 704 684 170.4
D 12 233 17116 96.46 704 684 170.4

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