ASTROSAT CZTI

Data Quality Report

Orbit 07840

Creation date: 2024-06-27T15:24:39.554793
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/AS1G06_077T02_9000001076_07840cztM0_level2.evt modeM0/AS1G06_077T02_9000001076_07840cztM0_level2_quad_clean.evt
Size (bytes)534,968,64087,013,440
Size510.2 MB 83.0 MB
Events in quadrant A3,124,599549,066
Events in quadrant B3,572,570558,712
Events in quadrant C4,692,524548,841
Events in quadrant D4,358,151512,310

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137593
B0150232
C0183572
D0174852

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6683490.733204%
B66831752.618584%
C66834927.361963%
D66833254.863085%

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 7688 6683 0 0 0.00% 0.00%
B 7688 6684 63 63 0.82% 0.94%
C 7688 6684 362 362 4.71% 5.42%
D 7688 6684 288 288 3.75% 4.31%

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 8 15 27796 166.1 803 788 162.6
A 0 226 7833 43.33 803 788 162.6
A 12 194 7010 38.27 803 788 162.6
B 4 239 282818 1826.85 810 791 154.4
B 4 81 43131 274.26 810 791 154.4
B 0 219 39566 251.17 810 791 154.4
C 1 16 1450454 8198.77 767 770 176.8
C 9 54 210386 1185.49 767 770 176.8
C 8 229 34317 189.73 767 770 176.8
D 2 152 1062509 5600.17 771 747 189.6
D 12 233 115141 603.36 771 747 189.6
D 2 14 74749 390.32 771 747 189.6

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