ASTROSAT CZTI

Data Quality Report

Orbit 24394

Creation date: 2024-06-27T19:05:32.678762
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/AS1A08_008T01_9000003596_24394cztM0_level2.evt modeM0/AS1A08_008T01_9000003596_24394cztM0_level2_quad_clean.evt
Size (bytes)490,020,480102,741,120
Size467.3 MB 98.0 MB
Events in quadrant A3,655,475662,807
Events in quadrant B3,357,767681,413
Events in quadrant C3,410,328649,449
Events in quadrant D3,947,502636,765

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155021
B0144761
C0143231
D0163821

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69062443.533160%
B69071802.606052%
C69071992.881135%
D69071532.215144%

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 7161 6907 74 74 1.03% 1.07%
B 7162 6908 5 5 0.07% 0.07%
C 7162 6908 0 0 0.00% 0.00%
D 7162 6908 13 13 0.18% 0.19%

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 6 10 478843 2865.79 824 803 166.8
A 13 254 10770 59.75 824 803 166.8
A 3 137 7547 40.43 824 803 166.8
B 15 33 90488 573.02 825 802 156.5
B 12 111 19397 118.81 825 802 156.5
B 11 111 17162 104.53 825 802 156.5
C 7 247 149114 806.31 794 796 183.9
C 14 238 125580 678.37 794 796 183.9
C 2 16 25900 136.47 794 796 183.9
D 1 52 791009 4035.31 807 782 195.8
D 8 195 77601 392.28 807 782 195.8
D 2 234 30753 153.05 807 782 195.8

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