ASTROSAT CZTI

Data Quality Report

Orbit 34688

Creation date: 2022-02-26T22:42:02.727898
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/AS1A07_093T16_9000004966_34688cztM0_level2.evt modeM0/AS1A07_093T16_9000004966_34688cztM0_level2_quad_clean.evt
Size (bytes)299,545,92057,755,520
Size285.7 MB 55.1 MB
Events in quadrant A1,643,070386,880
Events in quadrant B2,142,101381,604
Events in quadrant C1,709,597381,988
Events in quadrant D3,343,710355,763

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070792
B085901
C070831
D0122631

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A342260.175336%
B34221333.886616%
C3422130.379895%
D34221554.529515%

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 4703 3423 1 1 0.02% 0.03%
B 4703 3422 81 81 1.72% 2.37%
C 4703 3423 10 10 0.21% 0.29%
D 4703 3423 145 145 3.08% 4.24%

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 14 250 28743 349.55 396 387 81.1
A 10 83 26466 321.48 396 387 81.1
A 15 174 19601 236.86 396 387 81.1
B 5 172 382095 4964.34 389 378 76.9
B 5 255 126823 1644.45 389 378 76.9
B 0 190 53432 689.98 389 378 76.9
C 15 214 144053 1591.95 383 383 90.2
C 0 10 24745 269.95 383 383 90.2
C 15 208 23126 252.01 383 383 90.2
D 8 195 1407958 14479.9 374 365 97.2
D 7 38 181831 1866.74 374 365 97.2
D 2 250 103761 1063.63 374 365 97.2

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