ASTROSAT CZTI

Data Quality Report

Orbit 45575

Creation date: 2024-06-27T23:13:48.747675
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/AS1A13_071T04_9000006110_45575cztM0_level2.fits modeM0/AS1A13_071T04_9000006110_45575cztM0_level2_quad_clean.evt
Size (bytes)527,163,840104,097,600
Size502.7 MB 99.3 MB
Events in quadrant A5,424,826732,621
Events in quadrant B4,126,153726,301
Events in quadrant C3,549,177702,419
Events in quadrant D5,941,959566,632

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198271
B0160701
C0147137
D0219071

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60801612.648026%
B60813926.446308%
C60782213.636064%
D6081107517.678013%

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 7295 6081 13 13 0.18% 0.21%
B 7296 6082 254 254 3.48% 4.18%
C 7296 6080 135 135 1.85% 2.22%
D 7296 6082 417 417 5.72% 6.86%

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 2546174 17378.34 720 706 146.5
A 10 248 41169 276.25 720 706 146.5
A 0 243 20040 132.0 720 706 146.5
B 4 171 1019956 7531.37 700 681 135.3
B 5 172 128012 940.84 700 681 135.3
B 15 201 92842 680.97 700 681 135.3
C 14 254 440008 2760.56 689 693 159.1
C 12 2 412417 2587.18 689 693 159.1
C 8 222 6762 38.14 689 693 159.1
D 1 52 2307370 14525.35 631 611 158.8
D 11 241 403229 2535.23 631 611 158.8
D 11 224 355511 2234.76 631 611 158.8

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