ASTROSAT CZTI

Data Quality Report

Orbit 38245

Creation date: 2024-06-27T21:50:14.401349
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/AS1A07_145T01_9000005370_38245cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38245cztM0_level2_quad_clean.evt
Size (bytes)394,764,48095,624,640
Size376.5 MB 91.2 MB
Events in quadrant A2,744,740649,714
Events in quadrant B2,558,053676,144
Events in quadrant C3,321,201638,173
Events in quadrant D5,591,533573,870

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111803
B0107482
C0129162
D0203102

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A511490.175987%
B5114370.723504%
C51141362.659366%
D51143456.746187%

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 7237 5115 7 7 0.10% 0.14%
B 7237 5115 22 22 0.30% 0.43%
C 7237 5115 124 124 1.71% 2.42%
D 7237 5115 435 435 6.01% 8.50%

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 363795 3002.09 603 592 121.0
A 12 189 17747 141.8 603 592 121.0
A 13 6 8760 67.51 603 592 121.0
B 5 184 96399 834.43 608 592 114.8
B 5 172 63009 543.62 608 592 114.8
B 12 111 14017 116.92 608 592 114.8
C 14 254 718257 5131.1 597 602 139.9
C 15 214 215414 1535.87 597 602 139.9
C 9 236 23906 166.62 597 602 139.9
D 10 203 2293650 16277.06 585 571 140.9
D 12 235 609839 4324.79 585 571 140.9
D 1 52 120337 850.14 585 571 140.9

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