ASTROSAT CZTI

Data Quality Report

Orbit 28850

Creation date: 2024-06-27T19:57:10.416956
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/AS1A10_103T08_9000004136_28850cztM0_level2.evt modeM0/AS1A10_103T08_9000004136_28850cztM0_level2_quad_clean.evt
Size (bytes)790,453,440121,239,360
Size753.8 MB 115.6 MB
Events in quadrant A2,973,147888,222
Events in quadrant B3,300,572907,449
Events in quadrant C3,447,818871,527
Events in quadrant D13,808,458580,651

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124011
B0134311
C0139111
D0451046

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6042270.446872%
B6043941.555519%
C60431282.118153%
D6042510684.508441%

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 7257 6043 0 0 0.00% 0.00%
B 7258 6044 43 43 0.59% 0.71%
C 7258 6044 0 0 0.00% 0.00%
D 7256 6041 5276 5276 72.71% 87.34%

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 13 254 12042 74.54 769 754 151.4
A 0 226 6670 39.07 769 754 151.4
A 3 137 6542 38.22 769 754 151.4
B 5 172 128119 910.03 765 747 140.0
B 10 246 99251 703.78 765 747 140.0
B 5 255 46704 328.35 765 747 140.0
C 3 233 371283 2140.76 751 755 173.1
C 14 238 130266 748.26 751 755 173.1
C 14 254 11743 63.48 751 755 173.1
D 8 195 9471553 70223.38 574 560 134.9
D 1 52 2091337 15502.22 574 560 134.9
D 13 104 21432 154.76 574 560 134.9

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