ASTROSAT CZTI

Data Quality Report

Orbit 20230511_A12_101T03_9000005618_level2

Creation date: 2023-05-18T14:00:12.390672
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/AS1A12_101T03_9000005618cztM0_level2.fits modeM0/AS1A12_101T03_9000005618cztM0_level2_quad_clean.evt
Size (bytes)95,457,600115,522,560
Size91.0 MB 110.2 MB
Events in quadrant A571,588736,411
Events in quadrant B548,946728,046
Events in quadrant C501,364593,460
Events in quadrant D491,174662,980

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0238180
B0245250
C0342300
D0249990

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02320
B02320
C02320
D02320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11225160.142539%
B112251411.256125%
C11225161314.369710%
D112251461.300668%

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 15282 11225 0 0 0.00% 0.00%
B 15282 11225 0 0 0.00% 0.00%
C 15282 10986 0 0 0.00% 0.00%
D 15282 11223 0 0 0.00% 0.00%

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 0 29 487 8.7 149 140 39.9
A 9 19 486 8.68 149 140 39.9
A 14 95 465 8.15 149 140 39.9
B 2 9 452 10.14 144 137 31.1
B 3 17 397 8.37 144 137 31.1
B 5 232 375 7.66 144 137 31.1
C 1 80 402 7.85 132 124 35.4
C 1 81 400 7.79 132 124 35.4
C 3 203 386 7.4 132 124 35.4
D 6 67 390 6.59 140 127 39.9
D 6 231 377 6.27 140 127 39.9
D 7 3 362 5.89 140 127 39.9

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