ASTROSAT CZTI

Data Quality Report

Orbit 10988

Creation date: 2024-06-27T16:06:36.692932
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/AS1G08_027T06_9000001594_10988cztM0_level2.evt modeM0/AS1G08_027T06_9000001594_10988cztM0_level2_quad_clean.evt
Size (bytes)508,152,96095,166,720
Size484.6 MB 90.8 MB
Events in quadrant A4,055,872618,453
Events in quadrant B4,358,385612,632
Events in quadrant C3,083,208608,873
Events in quadrant D3,441,732579,586

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162622
B0172611
C0137961
D0146891

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66272143.229214%
B66274246.398069%
C6627861.297721%
D66271261.901313%

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 7467 6627 107 107 1.43% 1.61%
B 7467 6628 220 220 2.95% 3.32%
C 7467 6628 23 23 0.31% 0.35%
D 7467 6628 58 58 0.78% 0.88%

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 8 5 637324 3916.32 804 789 162.5
A 15 223 161989 991.79 804 789 162.5
A 8 15 78359 477.25 804 789 162.5
B 4 239 1078431 7111.61 792 774 151.5
B 0 214 55107 358.55 792 774 151.5
B 0 229 36022 232.61 792 774 151.5
C 4 254 73206 406.63 768 772 178.1
C 1 3 10258 53.25 768 772 178.1
C 13 61 5652 27.4 768 772 178.1
D 1 52 249344 1337.33 773 750 185.9
D 8 195 85636 456.65 773 750 185.9
D 13 104 71381 379.96 773 750 185.9

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