ASTROSAT CZTI

Data Quality Report

Orbit 23125

Creation date: 2024-06-27T18:50:12.532076
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/AS1A08_008T01_9000003414_23125cztM0_level2.evt modeM0/AS1A08_008T01_9000003414_23125cztM0_level2_quad_clean.evt
Size (bytes)1,254,732,480296,392,320
Size1.2 GB 282.7 MB
Events in quadrant A11,888,5831,936,379
Events in quadrant B7,658,9702,048,926
Events in quadrant C7,658,3351,962,189
Events in quadrant D9,682,1041,895,409

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0463352
B0336382
C0336152
D0402922

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03360
B03360
C03360
D03360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1644213608.271500%
B164432581.569057%
C164432831.721097%
D164437054.287539%

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 17331 16442 882 882 5.09% 5.36%
B 17332 16443 5 5 0.03% 0.03%
C 17332 16443 3 3 0.02% 0.02%
D 17332 16443 487 487 2.81% 2.96%

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 6 16 4692567 12595.72 1858 1817 372.4
A 4 2 31654 80.12 1858 1817 372.4
A 13 254 26095 65.19 1858 1817 372.4
B 0 189 54258 146.2 1907 1859 358.4
B 0 190 47695 127.88 1907 1859 358.4
B 12 111 44649 119.39 1907 1859 358.4
C 14 238 289340 673.45 1834 1839 426.9
C 8 208 114496 263.89 1834 1839 426.9
C 0 207 41302 92.44 1834 1839 426.9
D 12 233 1029956 2296.94 1841 1780 447.6
D 1 52 746201 1663.03 1841 1780 447.6
D 13 172 398630 886.56 1841 1780 447.6

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