ASTROSAT CZTI

Data Quality Report

Orbit 34448

Creation date: 2022-02-10T15:56:11.619475
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_058T05_9000004918_34448cztM0_level2.evt modeM0/AS1A10_058T05_9000004918_34448cztM0_level2_quad_clean.evt
Size (bytes)504,973,44059,693,760
Size481.6 MB 56.9 MB
Events in quadrant A2,659,061365,816
Events in quadrant B3,325,751362,401
Events in quadrant C3,675,123358,823
Events in quadrant D5,263,234337,707

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112583
B0132272
C0145952
D0196662

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A547070.127971%
B54701693.089580%
C5470320.585009%
D54701372.504570%

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 7203 5471 0 0 0.00% 0.00%
B 7203 5471 125 125 1.74% 2.28%
C 7203 5471 15 15 0.21% 0.27%
D 7203 5471 121 121 1.68% 2.21%

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 35898 260.11 674 660 135.5
A 13 254 8310 56.47 674 660 135.5
A 3 137 6564 43.58 674 660 135.5
B 5 172 328011 2628.11 656 637 124.6
B 0 229 205432 1644.07 656 637 124.6
B 5 255 94008 749.57 656 637 124.6
C 4 254 829152 5496.0 654 659 150.7
C 15 214 233378 1543.8 654 659 150.7
C 0 10 35386 230.37 654 659 150.7
D 8 195 2023220 12763.18 651 634 158.5
D 2 249 231036 1453.91 651 634 158.5
D 2 250 145106 911.67 651 634 158.5

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