ASTROSAT CZTI

Data Quality Report

Orbit 35896

Creation date: 2022-06-08T23:03:11.196644
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/AS1A11_080T01_9000005146_35896cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35896cztM0_level2_quad_clean.evt
Size (bytes)441,993,60081,584,640
Size421.5 MB 77.8 MB
Events in quadrant A2,774,735539,502
Events in quadrant B3,105,380535,873
Events in quadrant C3,032,195521,430
Events in quadrant D4,098,671487,327

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01155228
B01273838
C01230933
D01589182

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A553070.126582%
B5522891.611735%
C5529631.139447%
D55171622.936378%

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 7302 5538 0 0 0.00% 0.00%
B 7302 5534 54 54 0.74% 0.98%
C 7302 5539 54 54 0.74% 0.97%
D 7302 5532 178 178 2.44% 3.22%

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 166733 1223.3 672 662 135.8
A 13 254 8369 56.77 672 662 135.8
A 10 255 7515 50.48 672 662 135.8
B 5 172 249641 1981.01 658 644 125.7
B 5 255 234576 1861.15 658 644 125.7
B 0 213 16607 127.0 658 644 125.7
C 15 214 234826 1573.89 639 645 148.8
C 0 10 197526 1323.2 639 645 148.8
C 0 207 105574 705.21 639 645 148.8
D 12 227 787639 5007.98 635 618 157.2
D 13 249 308885 1961.57 635 618 157.2
D 8 195 161490 1023.66 635 618 157.2

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