ASTROSAT CZTI

Data Quality Report

Orbit 40909

Creation date: 2024-06-27T22:22:04.102988
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_102T01_9000005576_40909cztM0_level2.fits modeM0/AS1A12_102T01_9000005576_40909cztM0_level2_quad_clean.evt
Size (bytes)318,971,52088,464,960
Size304.2 MB 84.4 MB
Events in quadrant A2,781,267606,454
Events in quadrant B3,070,571593,615
Events in quadrant C2,520,649593,318
Events in quadrant D3,054,030542,772

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113473
B0124162
C0104362
D0124262

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4885340.696008%
B48852815.752303%
C4885491.003071%
D4885771.576254%

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 6948 4886 12 12 0.17% 0.25%
B 6948 4886 209 209 3.01% 4.28%
C 6948 4886 36 36 0.52% 0.74%
D 6948 4886 64 64 0.92% 1.31%

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 513613 4479.39 559 549 114.5
A 7 3 60988 527.67 559 549 114.5
A 12 189 21959 186.92 559 549 114.5
B 5 32 639039 6267.38 546 534 101.9
B 5 255 115535 1128.82 546 534 101.9
B 4 171 86601 844.81 546 534 101.9
C 15 214 208457 1621.63 555 559 128.2
C 0 10 130289 1011.91 555 559 128.2
C 14 254 5171 35.97 555 559 128.2
D 12 79 462711 3483.24 548 534 132.7
D 12 233 102736 770.26 548 534 132.7
D 2 249 98442 737.89 548 534 132.7

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