ASTROSAT CZTI

Data Quality Report

Orbit 13259

Creation date: 2024-06-27T16:38:28.709939
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/AS1G08_077T01_9000001970_13259cztM0_level2.evt modeM0/AS1G08_077T01_9000001970_13259cztM0_level2_quad_clean.evt
Size (bytes)480,669,12096,609,600
Size458.4 MB 92.1 MB
Events in quadrant A3,228,654629,741
Events in quadrant B4,998,131577,789
Events in quadrant C2,981,848666,506
Events in quadrant D2,932,715624,279

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136933
B0189872
C0129302
D0129022

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6118861.405688%
B611890814.841451%
C6118340.555737%
D6118210.343249%

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 7449 6120 58 58 0.78% 0.95%
B 7449 6120 624 624 8.38% 10.20%
C 7449 6120 11 11 0.15% 0.18%
D 7449 6120 3 3 0.04% 0.05%

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 15 239 348438 2334.42 739 724 149.0
A 1 162 14161 90.21 739 724 149.0
A 12 96 8820 54.35 739 724 149.0
B 4 239 2237343 17381.07 691 674 128.7
B 0 230 19162 143.67 691 674 128.7
B 3 209 16719 124.69 691 674 128.7
C 15 208 55703 322.21 747 751 170.5
C 14 234 13293 73.54 747 751 170.5
C 13 61 5353 26.98 747 751 170.5
D 8 195 58788 333.72 729 709 174.0
D 1 52 49265 279.0 729 709 174.0
D 2 234 23042 128.33 729 709 174.0

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