ASTROSAT CZTI

Data Quality Report

Orbit 21268

Creation date: 2024-06-27T18:23:45.339611
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/AS1A05_163T01_9000003118_21268cztM0_level2.evt modeM0/AS1A05_163T01_9000003118_21268cztM0_level2_quad_clean.evt
Size (bytes)58,383,36014,034,240
Size55.7 MB 13.4 MB
Events in quadrant A349,79998,523
Events in quadrant B365,37199,157
Events in quadrant C349,53494,350
Events in quadrant D646,99370,426

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011
B111
C1-1-1
D1-1-1

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02518872
B02540896
C02514909
D055333138

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246
B0277
C0258
D02610

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82100.000000%
B81200.000000%
C80220.249377%
D6617711.649017%

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 1260 979 0 0 0.00% 0.00%
B 1260 963 0 0 0.00% 0.00%
C 1260 965 0 0 0.00% 0.00%
D 1260 775 53 53 4.21% 6.84%

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 1296 58.48 90 88 20.7
A 0 226 760 32.53 90 88 20.7
A 3 137 756 32.34 90 88 20.7
B 3 64 6293 312.11 91 89 19.9
B 12 111 2040 98.15 91 89 19.9
B 0 230 1847 88.44 91 89 19.9
C 14 238 13688 619.15 86 86 22.0
C 13 61 571 22.08 86 86 22.0
C 3 202 211 5.69 86 86 22.0
D 1 52 318948 17511.65 66 64 18.2
D 13 174 54012 2962.58 66 64 18.2
D 2 120 4589 248.49 66 64 18.2

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