ASTROSAT CZTI

Data Quality Report

Orbit 35049

Creation date: 2022-03-23T07:43:06.635073
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_057T01_9000005022_35049cztM0_level2.evt modeM0/AS1A10_057T01_9000005022_35049cztM0_level2_quad_clean.evt
Size (bytes)498,355,20064,886,400
Size475.3 MB 61.9 MB
Events in quadrant A2,764,243407,810
Events in quadrant B3,630,295387,011
Events in quadrant C3,353,459397,153
Events in quadrant D4,952,801368,549

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120023
B0146592
C0133902
D0188542

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5776160.277008%
B57764187.236842%
C57761302.250693%
D57762293.964681%

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 7179 5777 5 5 0.07% 0.09%
B 7179 5777 308 308 4.29% 5.33%
C 7179 5777 134 134 1.87% 2.32%
D 7179 5777 207 207 2.88% 3.58%

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 10 83 78990 580.01 663 652 135.1
A 7 3 31788 230.53 663 652 135.1
A 15 174 25523 184.14 663 652 135.1
B 5 172 797442 6535.37 639 622 121.9
B 5 200 154289 1260.35 639 622 121.9
B 0 190 84835 690.7 639 622 121.9
C 0 10 320537 2138.79 643 648 149.6
C 15 214 239145 1594.6 643 648 149.6
C 9 54 168822 1124.42 643 648 149.6
D 8 195 1099433 7081.12 635 615 155.2
D 13 249 291721 1875.97 635 615 155.2
D 5 223 231881 1490.35 635 615 155.2

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