ASTROSAT CZTI

Data Quality Report

Orbit 15027

Creation date: 2024-06-27T17:02:43.557669
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_057T01_9000002212_15027cztM0_level2.evt modeM0/AS1T02_057T01_9000002212_15027cztM0_level2_quad_clean.evt
Size (bytes)558,267,84097,070,400
Size532.4 MB 92.6 MB
Events in quadrant A3,939,212623,165
Events in quadrant B5,562,820592,004
Events in quadrant C3,525,438618,764
Events in quadrant D3,383,716596,450

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164483
B0213222
C0150582
D0153482

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73071982.709730%
B730778810.784180%
C73071331.820172%
D73071582.162310%

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 7963 7308 0 0 0.00% 0.00%
B 7962 7307 481 481 6.04% 6.58%
C 7963 7308 0 0 0.00% 0.00%
D 7963 7308 20 20 0.25% 0.27%

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 1 162 214387 1224.08 867 847 174.4
A 1 178 116223 661.37 867 847 174.4
A 1 161 100300 570.1 867 847 174.4
B 10 16 1866805 11676.9 833 810 159.8
B 0 229 202698 1263.36 833 810 159.8
B 3 64 165209 1028.77 833 810 159.8
C 3 233 259398 1340.97 837 839 192.8
C 13 61 5924 26.37 837 839 192.8
C 14 234 5195 22.59 837 839 192.8
D 2 136 66769 325.99 837 808 202.3
D 10 70 63543 310.05 837 808 202.3
D 13 249 39116 189.33 837 808 202.3

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