ASTROSAT CZTI

Data Quality Report

Orbit 20027

Creation date: 2024-06-27T18:10:16.237635
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/AS1C04_001T01_9000002984_20027cztM0_level2.evt modeM0/AS1C04_001T01_9000002984_20027cztM0_level2_quad_clean.evt
Size (bytes)506,839,68082,874,880
Size483.4 MB 79.0 MB
Events in quadrant A3,274,184539,189
Events in quadrant B2,947,451541,325
Events in quadrant C2,900,643525,723
Events in quadrant D5,805,586469,456

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138721
B0127671
C0126102
D0213901

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62101402.254428%
B6211691.110932%
C6210731.175523%
D6210113518.276973%

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 7105 6211 75 75 1.06% 1.21%
B 7106 6212 4 4 0.06% 0.06%
C 7106 6212 0 0 0.00% 0.00%
D 7106 6212 1075 1075 15.13% 17.31%

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 5 16 242833 1623.75 732 716 149.1
A 14 238 195819 1308.46 732 716 149.1
A 11 29 11137 69.89 732 716 149.1
B 7 220 24643 170.23 732 712 140.6
B 0 189 21837 150.27 732 712 140.6
B 0 197 17329 118.2 732 712 140.6
C 14 238 110096 659.95 705 708 165.8
C 3 233 39437 233.65 705 708 165.8
C 13 61 5074 26.34 705 708 165.8
D 7 38 2690560 16251.21 681 660 165.5
D 8 195 143533 863.18 681 660 165.5
D 12 227 123526 742.3 681 660 165.5

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