ASTROSAT CZTI

Data Quality Report

Orbit 16250

Creation date: 2024-06-27T17:19:57.261095
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/AS1T02_112T01_9000002390_16250cztM0_level2.evt modeM0/AS1T02_112T01_9000002390_16250cztM0_level2_quad_clean.evt
Size (bytes)466,499,52063,912,960
Size444.9 MB 61.0 MB
Events in quadrant A3,854,956374,725
Events in quadrant B3,492,685376,141
Events in quadrant C3,222,393373,728
Events in quadrant D3,125,246366,077

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155232
B0143791
C0133191
D0136251

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63672453.847966%
B6367791.240773%
C6367610.958065%
D6367210.329826%

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 7463 6369 179 179 2.40% 2.81%
B 7463 6369 20 20 0.27% 0.31%
C 7463 6369 1 1 0.01% 0.02%
D 7463 6369 2 2 0.03% 0.03%

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 15 174 811574 5207.38 772 759 155.7
A 9 143 54068 342.37 772 759 155.7
A 3 1 11330 67.89 772 759 155.7
B 7 220 96497 647.54 783 763 147.8
B 3 64 74092 495.99 783 763 147.8
B 0 198 65033 434.72 783 763 147.8
C 3 233 147704 835.32 755 760 175.9
C 14 238 116318 656.9 755 760 175.9
C 7 247 11386 60.4 755 760 175.9
D 1 52 214638 1160.9 758 737 184.3
D 2 234 27206 143.65 758 737 184.3
D 2 120 16929 87.88 758 737 184.3

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