ASTROSAT CZTI

Data Quality Report

Orbit 12268

Creation date: 2024-06-27T16:24:43.753534
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/AS1G08_064T01_9000001814_12268cztM0_level2.evt modeM0/AS1G08_064T01_9000001814_12268cztM0_level2_quad_clean.evt
Size (bytes)674,622,72099,397,440
Size643.4 MB 94.8 MB
Events in quadrant A5,128,528618,577
Events in quadrant B5,467,634628,062
Events in quadrant C4,175,259625,147
Events in quadrant D5,121,992586,146

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173
B0151
C0173
D0162

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018218
B01768
C017810
D018218

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0228252316
B0238592109
C0191631246
D0226811763

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78921501.900659%
B79256958.769716%
C79671241.556420%
D79303143.959647%

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 9607 7974 46 46 0.48% 0.58%
B 9689 7996 382 382 3.94% 4.78%
C 9667 8041 62 62 0.64% 0.77%
D 9702 8013 230 230 2.37% 2.87%

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 13 251 1062525 5720.09 918 897 185.6
A 5 16 192493 1032.33 918 897 185.6
A 1 162 99239 529.87 918 897 185.6
B 4 239 1492407 8780.87 890 867 169.9
B 0 85 180290 1056.28 890 867 169.9
B 11 51 118609 693.16 890 867 169.9
C 15 208 535536 2528.78 906 910 211.4
C 3 233 76511 357.59 906 910 211.4
C 4 175 24838 113.18 906 910 211.4
D 1 52 1379325 6518.98 884 858 211.5
D 10 199 102435 480.37 884 858 211.5
D 10 253 62839 293.12 884 858 211.5

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