ASTROSAT CZTI

Data Quality Report

Orbit 14451

Creation date: 2024-06-27T16:55:22.087929
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_025T01_9000002130_14451cztM0_level2.evt modeM0/AS1G08_025T01_9000002130_14451cztM0_level2_quad_clean.evt
Size (bytes)558,135,36085,072,320
Size532.3 MB 81.1 MB
Events in quadrant A3,762,407526,431
Events in quadrant B4,181,590516,624
Events in quadrant C4,390,366509,841
Events in quadrant D4,064,142505,352

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157522
B0171271
C0175331
D0170131

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74411381.854589%
B74411772.378713%
C74411241.666443%
D74412142.875958%

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 7747 7442 10 10 0.13% 0.13%
B 7747 7442 30 30 0.39% 0.40%
C 7747 7442 4 4 0.05% 0.05%
D 7747 7442 106 106 1.37% 1.42%

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 12 189 117982 651.26 890 871 179.8
A 14 14 86722 477.43 890 871 179.8
A 14 31 64749 355.23 890 871 179.8
B 10 16 246660 1450.5 882 860 169.5
B 0 219 223568 1314.23 882 860 169.5
B 0 189 84529 493.74 882 860 169.5
C 3 233 998421 5045.45 853 855 197.7
C 0 207 48195 239.43 853 855 197.7
C 7 247 15220 72.65 853 855 197.7
D 2 120 358367 1746.53 855 833 204.7
D 10 199 220107 1071.14 855 833 204.7
D 12 110 94070 455.46 855 833 204.7

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