ASTROSAT CZTI

Data Quality Report

Orbit 14125

Creation date: 2024-06-27T16:50:34.478849
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/AS1A04_149T01_9000002082_14125cztM0_level2.evt modeM0/AS1A04_149T01_9000002082_14125cztM0_level2_quad_clean.evt
Size (bytes)561,850,560107,225,280
Size535.8 MB 102.3 MB
Events in quadrant A3,316,315729,312
Events in quadrant B6,131,932654,588
Events in quadrant C3,422,427719,985
Events in quadrant D3,713,460699,015

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139753
B0224842
C0142612
D0151002

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6362981.540396%
B6362119818.830556%
C6362881.383213%
D6363961.508722%

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 7583 6364 2 2 0.03% 0.03%
B 7583 6364 812 812 10.71% 12.76%
C 7583 6364 0 0 0.00% 0.00%
D 7584 6365 7 7 0.09% 0.11%

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 12 189 71964 424.08 839 824 167.8
A 13 248 10057 55.04 839 824 167.8
A 0 226 7769 41.4 839 824 167.8
B 0 85 2968122 20930.46 771 753 141.8
B 0 189 50816 353.12 771 753 141.8
B 3 209 35923 248.07 771 753 141.8
C 3 233 250732 1363.74 808 815 183.3
C 10 22 11534 58.49 808 815 183.3
C 0 207 6217 29.47 808 815 183.3
D 8 195 351133 1837.47 812 794 190.7
D 2 152 84756 440.37 812 794 190.7
D 10 157 66116 342.6 812 794 190.7

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