ASTROSAT CZTI

Data Quality Report

Orbit 31160

Creation date: 2024-06-27T20:24:44.381918
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/AS1C06_010T01_9000004504_31160cztM0_level2.evt modeM0/AS1C06_010T01_9000004504_31160cztM0_level2_quad_clean.evt
Size (bytes)611,208,000119,666,880
Size582.9 MB 114.1 MB
Events in quadrant A2,956,508828,856
Events in quadrant B4,927,586817,707
Events in quadrant C3,066,486789,229
Events in quadrant D7,136,645751,128

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128611
B0192481
C0130861
D0257251

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6261410.654847%
B6262991.580965%
C6262771.229639%
D626167210.733110%

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 7246 6262 7 7 0.10% 0.11%
B 7247 6263 10 10 0.14% 0.16%
C 7247 6263 25 25 0.34% 0.40%
D 7246 6262 865 865 11.94% 13.81%

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 15 174 30149 195.28 753 738 150.6
A 3 247 15422 97.5 753 738 150.6
A 13 254 10964 67.9 753 738 150.6
B 6 159 1758745 12524.09 740 721 140.4
B 15 33 146621 1039.39 740 721 140.4
B 0 190 48014 336.91 740 721 140.4
C 0 10 126457 754.57 711 714 166.6
C 14 238 118789 708.56 711 714 166.6
C 3 233 16736 96.15 711 714 166.6
D 8 195 3382628 19022.88 708 694 177.8
D 13 174 768304 4317.69 708 694 177.8
D 12 233 148447 831.09 708 694 177.8

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