ASTROSAT CZTI

Data Quality Report

Orbit 03540

Creation date: 2024-06-27T14:30:42.579673
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_045T01_9000000468_03540cztM0_level2.evt modeM0/AS1G05_045T01_9000000468_03540cztM0_level2_quad_clean.evt
Size (bytes)1,005,618,240134,976,960
Size959.0 MB 128.7 MB
Events in quadrant A6,822,743797,511
Events in quadrant B7,627,095790,899
Events in quadrant C9,104,432764,739
Events in quadrant D5,959,100772,459

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0303143
B0318322
C0365522
D0286562

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02820
B02820
C02820
D02820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A139203612.593391%
B139203272.349138%
C139207345.272989%
D139201581.135057%

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 14900 13921 161 161 1.08% 1.16%
B 14900 13920 128 128 0.86% 0.92%
C 14900 13921 601 601 4.03% 4.32%
D 14900 13921 27 27 0.18% 0.19%

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 50 737548 2312.63 1549 1510 318.3
A 3 1 61031 187.01 1549 1510 318.3
A 8 15 19138 55.39 1549 1510 318.3
B 14 167 1075604 3543.03 1571 1531 303.2
B 15 204 303078 994.71 1571 1531 303.2
B 0 228 38752 122.78 1571 1531 303.2
C 4 248 2561706 7379.76 1493 1498 346.9
C 1 192 477721 1372.7 1493 1498 346.9
C 15 208 168815 482.29 1493 1498 346.9
D 13 223 83341 225.13 1508 1459 363.7
D 5 233 36115 95.28 1508 1459 363.7
D 13 239 29120 76.05 1508 1459 363.7

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