ASTROSAT CZTI

Data Quality Report

Orbit 36961

Creation date: 2024-06-27T21:33:38.314124
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/AS1C07_001T10_9000005252_36961cztM0_level2.evt modeM0/AS1C07_001T10_9000005252_36961cztM0_level2_quad_clean.evt
Size (bytes)397,336,32083,568,960
Size378.9 MB 79.7 MB
Events in quadrant A2,824,872539,792
Events in quadrant B2,838,651538,790
Events in quadrant C2,944,677535,949
Events in quadrant D3,039,424519,662

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121492
B0121911
C0123101
D0129591

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5667360.635257%
B5667310.547027%
C5667410.723487%
D5667591.041115%

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 6981 5668 24 24 0.34% 0.42%
B 6981 5668 17 17 0.24% 0.30%
C 6981 5668 30 30 0.43% 0.53%
D 6981 5668 54 54 0.77% 0.95%

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 201983 1599.27 617 603 125.9
A 7 16 147932 1170.02 617 603 125.9
A 15 237 56416 443.24 617 603 125.9
B 0 221 76026 639.61 616 600 117.9
B 5 255 60174 505.19 616 600 117.9
B 0 189 46106 385.89 616 600 117.9
C 15 214 243142 1725.2 603 606 140.6
C 14 254 128813 911.96 603 606 140.6
C 0 207 86159 608.55 603 606 140.6
D 12 17 256845 1751.55 604 586 146.3
D 2 250 105600 717.78 604 586 146.3
D 2 153 91664 622.52 604 586 146.3

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