ASTROSAT CZTI

Data Quality Report

Orbit 19827

Creation date: 2024-06-27T18:07:34.732897
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/AS1T03_118T01_9000002962_19827cztM0_level2.evt modeM0/AS1T03_118T01_9000002962_19827cztM0_level2_quad_clean.evt
Size (bytes)923,546,880151,182,720
Size880.8 MB 144.2 MB
Events in quadrant A6,813,993955,650
Events in quadrant B6,349,972968,332
Events in quadrant C5,981,040922,466
Events in quadrant D8,007,246896,209

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02480
B02480
C02480
D02480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0281063
B0265063
C0253523
D0319563

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A120854113.400910%
B120862842.349826%
C120861911.580341%
D120864623.822605%

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 15009 12084 113 113 0.75% 0.94%
B 15011 12086 55 55 0.37% 0.46%
C 15011 12086 1 1 0.01% 0.01%
D 15011 12086 291 291 1.94% 2.41%

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 14 238 872448 2854.67 1516 1485 305.1
A 14 254 83439 268.61 1516 1485 305.1
A 0 226 13265 38.61 1516 1485 305.1
B 7 220 206695 706.48 1518 1481 290.5
B 0 198 77686 262.35 1518 1481 290.5
B 0 244 43679 145.27 1518 1481 290.5
C 14 238 228680 661.39 1468 1480 343.5
C 3 233 28080 77.43 1468 1480 343.5
C 13 61 10245 25.52 1468 1480 343.5
D 1 52 1590023 4477.72 1464 1420 354.8
D 7 96 316815 888.99 1464 1420 354.8
D 7 238 269049 754.35 1464 1420 354.8

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