ASTROSAT CZTI

Data Quality Report

Orbit 20190909_A05_226T05_9000003148_level2

Creation date: 2019-09-12T14:05:07.618832
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A05_226T05_9000003148cztM0_level2_bc.evt modeM0/AS1A05_226T05_9000003148cztM0_level2_quad_clean.evt
Size (bytes)886,066,560462,314,880
Size845.0 MB 440.9 MB
Events in quadrant A5,657,1553,186,994
Events in quadrant B6,038,3113,207,239
Events in quadrant C4,763,5393,065,056
Events in quadrant D8,740,3232,899,741

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0498360
B0522670
C0487560
D0655430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04860
B04860
C04860
D04860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A239101170.489335%
B239102791.166876%
C239101460.610623%
D2391020318.494354%

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 28125 23910 8 8 0.03% 0.03%
B 28125 23909 36 36 0.13% 0.15%
C 28125 23912 0 0 0.00% 0.00%
D 28125 23909 122 122 0.43% 0.51%

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 5 168 424055 1503.4 1282 1261 281.2
A 9 143 90648 317.85 1282 1261 281.2
A 12 96 82799 289.94 1282 1261 281.2
B 0 189 323474 1309.79 1280 1251 246.0
B 6 36 275206 1113.58 1280 1251 246.0
B 3 64 149576 602.92 1280 1251 246.0
C 3 9 34782 116.15 1218 1212 289.0
C 10 23 25388 83.65 1218 1212 289.0
C 7 247 18207 58.8 1218 1212 289.0
D 1 52 1708005 5963.8 1209 1167 286.2
D 13 174 1546074 5398.0 1209 1167 286.2
D 13 153 230015 799.61 1209 1167 286.2

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