ASTROSAT CZTI

Data Quality Report

Orbit 25040

Creation date: 2024-06-27T19:13:06.315571
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/AS1T03_206T01_9000003672_25040cztM0_level2.evt modeM0/AS1T03_206T01_9000003672_25040cztM0_level2_quad_clean.evt
Size (bytes)519,425,28094,415,040
Size495.4 MB 90.0 MB
Events in quadrant A3,265,323625,939
Events in quadrant B3,361,617649,426
Events in quadrant C3,394,714597,615
Events in quadrant D5,293,188557,508

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135202
B0137172
C0137522
D0200812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6137450.733257%
B6137430.700668%
C6136871.417862%
D61362453.992829%

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 7472 6138 15 15 0.20% 0.24%
B 7472 6138 3 3 0.04% 0.05%
C 7471 6137 11 11 0.15% 0.18%
D 7471 6137 194 194 2.60% 3.16%

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 4 2 97742 600.58 811 798 161.4
A 11 208 32397 195.76 811 798 161.4
A 13 254 10665 61.13 811 798 161.4
B 3 64 60208 391.27 817 799 151.8
B 0 190 47121 305.08 817 799 151.8
B 5 172 28892 185.02 817 799 151.8
C 7 247 154063 843.38 776 783 181.7
C 14 238 126800 693.38 776 783 181.7
C 3 233 37046 199.53 776 783 181.7
D 8 195 1355821 7269.35 765 743 186.4
D 1 52 560960 3005.3 765 743 186.4
D 12 233 167356 893.8 765 743 186.4

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