ASTROSAT CZTI

Data Quality Report

Orbit 23540

Creation date: 2024-06-27T18:55:55.436975
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/AS1A07_011T01_9000003482_23540cztM0_level2.evt modeM0/AS1A07_011T01_9000003482_23540cztM0_level2_quad_clean.evt
Size (bytes)645,111,36097,433,280
Size615.2 MB 92.9 MB
Events in quadrant A3,630,208613,772
Events in quadrant B4,159,847620,804
Events in quadrant C3,668,006597,552
Events in quadrant D7,556,304581,712

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158371
B0172521
C0158811
D0276551

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77221451.877752%
B77232012.602616%
C77221862.408702%
D7722120115.552966%

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 7942 7722 0 0 0.00% 0.00%
B 7943 7723 23 23 0.29% 0.30%
C 7942 7722 0 0 0.00% 0.00%
D 7942 7722 1005 1005 12.65% 13.01%

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 13880 68.62 939 918 188.9
A 3 137 8506 40.17 939 918 188.9
A 0 226 8155 38.31 939 918 188.9
B 0 189 302984 1713.52 928 905 176.3
B 3 64 53864 300.41 928 905 176.3
B 0 229 52124 290.54 928 905 176.3
C 14 238 141165 679.18 888 891 206.5
C 9 232 25334 118.35 888 891 206.5
C 7 247 22657 105.39 888 891 206.5
D 1 52 1898574 8981.19 864 837 211.3
D 12 233 988479 4674.09 864 837 211.3
D 7 38 944707 4466.94 864 837 211.3

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