ASTROSAT CZTI

Data Quality Report

Orbit 24202

Creation date: 2024-06-27T19:03:24.875761
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/AS1A07_160T05_9000003580_24202cztM0_level2.evt modeM0/AS1A07_160T05_9000003580_24202cztM0_level2_quad_clean.evt
Size (bytes)481,633,92083,220,480
Size459.3 MB 79.4 MB
Events in quadrant A3,419,306540,777
Events in quadrant B3,314,408551,085
Events in quadrant C3,648,292504,455
Events in quadrant D3,782,576489,850

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137032
B0134442
C0148532
D0151412

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6218731.174011%
B6218801.286587%
C62181011.624317%
D6218871.399164%

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 6218 22 22 0.29% 0.35%
B 7583 6218 0 0 0.00% 0.00%
C 7583 6219 4 4 0.05% 0.06%
D 7583 6218 29 29 0.38% 0.47%

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 6 16 142352 854.13 850 837 165.7
A 13 254 9214 50.56 850 837 165.7
A 0 226 7325 39.16 850 837 165.7
B 12 111 18123 110.84 846 827 156.0
B 11 111 16181 98.4 846 827 156.0
B 14 111 14384 86.88 846 827 156.0
C 7 247 342227 1874.22 797 802 182.2
C 14 238 130441 711.64 797 802 182.2
C 2 16 61886 335.31 797 802 182.2
D 8 195 359732 1841.89 806 784 194.9
D 1 52 187743 959.36 806 784 194.9
D 12 218 128342 654.55 806 784 194.9

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