ASTROSAT CZTI

Data Quality Report

Orbit 35728

Creation date: 2022-05-10T14:39:51.361984
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/AS1A09_029T05_9000005124_35728cztM0_level2.evt modeM0/AS1A09_029T05_9000005124_35728cztM0_level2_quad_clean.evt
Size (bytes)367,361,28063,636,480
Size350.3 MB 60.7 MB
Events in quadrant A2,426,137401,301
Events in quadrant B2,587,372405,576
Events in quadrant C2,760,592388,168
Events in quadrant D3,004,399374,240

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105163
B0110462
C0113472
D0125422

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A509990.176505%
B5099430.843303%
C5099711.392430%
D5099921.804275%

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 6982 5100 1 1 0.01% 0.02%
B 6982 5100 26 26 0.37% 0.51%
C 6982 5100 70 70 1.00% 1.37%
D 6982 5100 98 98 1.40% 1.92%

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 10 83 142676 1199.99 579 568 118.4
A 13 6 18129 148.29 579 568 118.4
A 7 48 11145 89.31 579 568 118.4
B 5 172 203552 1835.43 576 560 110.6
B 5 255 55947 500.8 576 560 110.6
B 4 81 30457 270.33 576 560 110.6
C 0 10 219430 1680.29 555 558 130.3
C 15 214 214393 1641.62 555 558 130.3
C 9 187 72126 549.43 555 558 130.3
D 14 52 404931 2944.52 555 539 137.3
D 13 249 167848 1218.24 555 539 137.3
D 2 120 105515 764.37 555 539 137.3

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