ASTROSAT CZTI

Data Quality Report

Orbit 04919

Creation date: 2024-06-27T14:48:49.522445
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/AS1G05_118T01_9000000622_04919cztM0_level2.evt modeM0/AS1G05_118T01_9000000622_04919cztM0_level2_quad_clean.evt
Size (bytes)931,296,960171,774,720
Size888.2 MB 163.8 MB
Events in quadrant A5,857,8341,099,995
Events in quadrant B6,660,5371,100,813
Events in quadrant C5,840,3741,103,673
Events in quadrant D9,004,2061,037,932

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257384
B0279973
C0260233
D0351583

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02520
B02520
C02520
D02520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A124471230.988190%
B124471891.518438%
C12447840.674861%
D124477926.362979%

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 15737 12447 1 1 0.01% 0.01%
B 15737 12449 71 71 0.45% 0.57%
C 15737 12449 1 1 0.01% 0.01%
D 15737 12447 680 680 4.32% 5.46%

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 0 31 69733 228.35 1479 1445 299.0
A 15 174 23785 74.7 1479 1445 299.0
A 15 31 22781 71.34 1479 1445 299.0
B 10 16 824047 2989.36 1475 1442 275.2
B 15 54 43641 153.35 1475 1442 275.2
B 0 183 25365 86.93 1475 1442 275.2
C 9 247 126597 380.75 1438 1447 328.7
C 1 16 87066 260.48 1438 1447 328.7
C 13 61 11639 31.01 1438 1447 328.7
D 2 33 1894543 5497.54 1419 1374 344.4
D 2 136 511748 1482.07 1419 1374 344.4
D 1 7 335223 969.46 1419 1374 344.4

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