ASTROSAT CZTI

Data Quality Report

Orbit 31413

Creation date: 2024-06-27T20:28:02.363174
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/AS1A10_094T26_9000004558_31413cztM0_level2.evt modeM0/AS1A10_094T26_9000004558_31413cztM0_level2_quad_clean.evt
Size (bytes)666,953,280174,300,480
Size636.1 MB 166.2 MB
Events in quadrant A3,977,0891,193,895
Events in quadrant B6,221,8391,175,555
Events in quadrant C4,391,8891,183,675
Events in quadrant D5,054,4311,157,993

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167551
B0248681
C0178981
D0201361

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8181520.635619%
B81811371.674612%
C81811782.175773%
D81811561.906857%

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 9481 8183 0 0 0.00% 0.00%
B 9481 8183 19 19 0.20% 0.23%
C 9481 8182 23 23 0.24% 0.28%
D 9481 8182 98 98 1.03% 1.20%

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 13 254 12759 57.33 1030 1011 204.9
A 3 137 9615 41.98 1030 1011 204.9
A 0 226 8997 38.97 1030 1011 204.9
B 6 159 2144167 11570.21 999 977 185.2
B 4 80 112442 601.75 999 977 185.2
B 12 111 21952 113.24 999 977 185.2
C 14 238 171953 749.44 990 996 228.1
C 10 22 171444 747.21 990 996 228.1
C 3 233 146697 638.72 990 996 228.1
D 8 195 666307 2834.36 1005 982 234.7
D 12 218 366584 1557.5 1005 982 234.7
D 2 250 92115 388.24 1005 982 234.7

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