ASTROSAT CZTI

Data Quality Report

Orbit 39750

Creation date: 2024-06-27T22:08:33.271493
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_022T01_9000005494_39750cztM0_level2.fits modeM0/AS1A12_022T01_9000005494_39750cztM0_level2_quad_clean.evt
Size (bytes)352,586,88098,193,600
Size336.3 MB 93.6 MB
Events in quadrant A3,494,500682,554
Events in quadrant B2,650,294695,913
Events in quadrant C2,759,638648,011
Events in quadrant D3,741,395581,434

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137293
B0110272
C0111262
D0145862

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5215891.706616%
B5215260.498562%
C5215140.268456%
D52152705.177373%

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 7250 5216 61 61 0.84% 1.17%
B 7250 5216 13 13 0.18% 0.25%
C 7250 5216 11 11 0.15% 0.21%
D 7250 5216 254 254 3.50% 4.87%

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 463255 3621.34 635 622 127.8
A 13 248 319809 2498.49 635 622 127.8
A 15 174 236934 1849.77 635 622 127.8
B 5 172 70193 588.83 625 610 118.2
B 5 255 46173 385.57 625 610 118.2
B 0 186 28511 236.11 625 610 118.2
C 15 214 217146 1541.56 610 614 140.5
C 15 208 46487 326.58 610 614 140.5
C 9 187 35700 249.79 610 614 140.5
D 12 227 619530 4202.19 607 589 147.3
D 12 233 386232 2618.25 607 589 147.3
D 13 249 159605 1079.61 607 589 147.3

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