ASTROSAT CZTI

Data Quality Report

Orbit 16221

Creation date: 2024-06-27T17:19:33.602519
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/AS1T02_112T01_9000002390_16221cztM0_level2.evt modeM0/AS1T02_112T01_9000002390_16221cztM0_level2_quad_clean.evt
Size (bytes)452,900,16061,992,000
Size431.9 MB 59.1 MB
Events in quadrant A3,839,485354,134
Events in quadrant B3,235,690371,131
Events in quadrant C3,076,292362,484
Events in quadrant D3,143,556356,374

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152102
B0134991
C0128581
D0135731

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61902534.087237%
B6190360.581583%
C6190480.775444%
D6190390.630048%

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 7276 6191 159 159 2.19% 2.57%
B 7276 6192 2 2 0.03% 0.03%
C 7276 6192 0 0 0.00% 0.00%
D 7276 6192 18 18 0.25% 0.29%

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 688831 4494.34 752 735 153.1
A 0 253 149991 974.87 752 735 153.1
A 8 247 90512 586.38 752 735 153.1
B 0 219 138882 944.0 765 747 146.3
B 0 198 34721 232.18 765 747 146.3
B 12 111 16864 110.14 765 747 146.3
C 14 238 112705 661.58 730 735 169.2
C 3 233 57804 337.19 730 735 169.2
C 7 247 49411 287.6 730 735 169.2
D 13 112 112976 627.54 736 715 178.9
D 1 52 108549 602.8 736 715 178.9
D 15 0 76155 421.71 736 715 178.9

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