ASTROSAT CZTI

Data Quality Report

Orbit 34424

Creation date: 2022-02-09T01:49:34.475070
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/AS1A05_108T02_9000004914_34424cztM0_level2.evt modeM0/AS1A05_108T02_9000004914_34424cztM0_level2_quad_clean.evt
Size (bytes)440,616,96093,600,000
Size420.2 MB 89.3 MB
Events in quadrant A2,473,143638,355
Events in quadrant B3,110,002644,351
Events in quadrant C2,818,408624,657
Events in quadrant D4,601,246574,743

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104273
B0123552
C0112522
D0171332

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A503030.059642%
B50301743.459245%
C5030691.371769%
D50303316.580517%

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 7123 5031 0 0 0.00% 0.00%
B 7123 5031 125 125 1.75% 2.48%
C 7123 5031 47 47 0.66% 0.93%
D 7123 5031 290 290 4.07% 5.76%

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 35959 282.23 624 613 125.2
A 13 254 9354 69.79 624 613 125.2
A 13 6 9119 67.92 624 613 125.2
B 5 172 416030 3576.62 614 601 116.2
B 0 190 137553 1179.08 614 601 116.2
B 0 229 39911 338.44 614 601 116.2
C 15 214 213973 1547.17 599 607 137.9
C 0 10 204457 1478.17 599 607 137.9
C 14 67 46830 335.17 599 607 137.9
D 8 195 791519 5532.61 583 566 143.0
D 2 250 409356 2859.43 583 566 143.0
D 7 80 323759 2260.69 583 566 143.0

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