ASTROSAT CZTI

Data Quality Report

Orbit 01000

Creation date: 2024-06-27T14:05:57.352748
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/AS1P01_998T02_9000000190_01000cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_01000cztM0_level2_quad_clean.evt
Size (bytes)985,489,920108,538,560
Size939.8 MB 103.5 MB
Events in quadrant A7,204,553726,206
Events in quadrant B7,507,281728,523
Events in quadrant C7,378,613706,550
Events in quadrant D7,345,848695,341

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258083
B0266461
C0262761
D0262171

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6168190.308042%
B6168220.356680%
C616840.064851%
D6169120.194521%

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 7283 6169 182 182 2.50% 2.95%
B 7283 6169 232 232 3.19% 3.76%
C 7283 6169 150 150 2.06% 2.43%
D 7284 6170 264 264 3.62% 4.28%

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 0 253 86900 192.81 1851 1860 441.1
A 12 189 12292 23.65 1851 1860 441.1
A 11 79 8333 14.68 1851 1860 441.1
B 5 249 74506 161.26 1925 1926 450.1
B 7 221 48945 104.47 1925 1926 450.1
B 4 200 18495 36.81 1925 1926 450.1
C 15 241 311073 622.67 1792 1850 496.6
C 3 79 34123 64.99 1792 1850 496.6
C 3 111 29431 55.54 1792 1850 496.6
D 1 4 405788 758.47 1758 1819 532.6
D 12 22 291687 544.24 1758 1819 532.6
D 10 85 25069 43.65 1758 1819 532.6

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