ASTROSAT CZTI

Data Quality Report

Orbit 26536

Creation date: 2024-06-27T19:30:12.285257
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/AS1A09_095T02_9000003840_26536cztM0_level2.evt modeM0/AS1A09_095T02_9000003840_26536cztM0_level2_quad_clean.evt
Size (bytes)744,488,640120,058,560
Size710.0 MB 114.5 MB
Events in quadrant A3,954,107812,869
Events in quadrant B3,806,841828,783
Events in quadrant C4,803,406768,269
Events in quadrant D9,488,057716,321

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164340
B0159000
C0188440
D0332250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73251461.993174%
B73251121.529010%
C73255527.535836%
D7325142119.399317%

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 7750 7326 52 52 0.67% 0.71%
B 7750 7327 11 11 0.14% 0.15%
C 7750 7327 398 398 5.14% 5.43%
D 7750 7325 1303 1303 16.81% 17.79%

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 13 486764 2772.25 876 857 175.3
A 5 168 83107 469.26 876 857 175.3
A 13 254 12307 65.33 876 857 175.3
B 3 112 238207 1446.21 874 851 164.1
B 3 64 84356 508.79 874 851 164.1
B 5 172 36033 214.36 874 851 164.1
C 15 127 1217694 6362.69 824 828 191.3
C 14 238 130979 680.53 824 828 191.3
C 4 254 129754 674.12 824 828 191.3
D 1 52 4295848 23204.58 784 766 185.1
D 7 80 1750609 9453.69 784 766 185.1
D 13 104 352926 1902.58 784 766 185.1

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