ASTROSAT CZTI

Data Quality Report

Orbit 15406

Creation date: 2024-06-27T17:08:06.250127
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_072T01_9000002272_15406cztM0_level2.evt modeM0/AS1G08_072T01_9000002272_15406cztM0_level2_quad_clean.evt
Size (bytes)813,839,040109,445,760
Size776.1 MB 104.4 MB
Events in quadrant A3,726,833728,997
Events in quadrant B4,024,832740,970
Events in quadrant C3,880,689731,772
Events in quadrant D12,471,791552,911

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166143
B0171652
C0168152
D0427042

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8044400.497265%
B8044690.857782%
C8044220.273496%
D8044232028.841372%

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 8810 8047 8 8 0.09% 0.10%
B 8810 8047 9 9 0.10% 0.11%
C 8810 8047 2 2 0.02% 0.02%
D 8810 8046 2195 2195 24.91% 27.28%

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 9 143 50267 256.51 948 929 192.3
A 13 248 10383 49.15 948 929 192.3
A 15 69 10232 48.37 948 929 192.3
B 3 209 53665 287.55 953 928 183.4
B 4 48 50392 269.7 953 928 183.4
B 0 190 36990 196.63 953 928 183.4
C 3 233 217569 1022.45 918 921 211.9
C 7 247 44841 207.28 918 921 211.9
C 14 234 25216 114.66 918 921 211.9
D 13 122 7227311 36813.85 799 773 196.3
D 9 68 1424076 7250.67 799 773 196.3
D 5 222 443145 2253.55 799 773 196.3

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