ASTROSAT CZTI

Data Quality Report

Orbit 38471

Creation date: 2024-06-27T21:53:12.777771
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_018T01_9000005386_38471cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38471cztM0_level2_quad_clean.evt
Size (bytes)353,111,04093,294,720
Size336.8 MB 89.0 MB
Events in quadrant A2,900,099630,349
Events in quadrant B3,634,810628,828
Events in quadrant C2,677,202615,632
Events in quadrant D3,418,208554,071

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121283
B0144862
C0115392
D0141742

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A565840.070696%
B56582243.958996%
C565850.088370%
D56591843.251458%

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 7240 5659 4 4 0.06% 0.07%
B 7240 5659 136 136 1.88% 2.40%
C 7240 5659 1 1 0.01% 0.02%
D 7241 5660 165 165 2.28% 2.92%

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 406881 3178.76 632 619 127.8
A 9 143 28802 220.52 632 619 127.8
A 12 189 12068 89.58 632 619 127.8
B 8 3 906374 7558.45 619 602 119.8
B 4 232 111260 923.41 619 602 119.8
B 0 221 58518 483.3 619 602 119.8
C 15 214 238460 1673.42 611 612 142.1
C 3 233 18837 128.22 611 612 142.1
C 14 254 13577 91.21 611 612 142.1
D 13 249 264439 1791.34 603 586 147.3
D 10 118 193572 1310.21 603 586 147.3
D 2 153 155579 1052.27 603 586 147.3

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