ASTROSAT CZTI

Data Quality Report

Orbit 31318

Creation date: 2024-06-27T20:26:38.757767
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/AS1A10_053T30_9000004536_31318cztM0_level2.evt modeM0/AS1A10_053T30_9000004536_31318cztM0_level2_quad_clean.evt
Size (bytes)1,135,126,080189,138,240
Size1.1 GB 180.4 MB
Events in quadrant A6,376,3861,226,410
Events in quadrant B11,764,0871,206,283
Events in quadrant C8,172,7541,178,424
Events in quadrant D7,133,6851,164,856

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280772
B0448532
C0333352
D0305892

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02800
B02800
C02800
D02800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13793440.319002%
B137933642.639020%
C137933392.457768%
D13793760.551004%

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 14998 13795 6 6 0.04% 0.04%
B 14998 13795 96 96 0.64% 0.70%
C 14998 13795 7 7 0.05% 0.05%
D 14998 13795 38 38 0.25% 0.28%

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 13 254 25325 71.73 1647 1608 330.7
A 8 192 21848 61.21 1647 1608 330.7
A 3 137 17004 46.56 1647 1608 330.7
B 6 159 3918520 12543.33 1616 1572 312.3
B 4 80 1013873 3241.71 1616 1572 312.3
B 0 190 279951 891.46 1616 1572 312.3
C 3 233 1645270 4442.87 1578 1590 370.0
C 14 238 274922 738.82 1578 1590 370.0
C 2 114 31754 81.53 1578 1590 370.0
D 8 195 778515 2038.06 1603 1561 381.2
D 13 249 138417 358.99 1603 1561 381.2
D 2 250 83755 215.61 1603 1561 381.2

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