ASTROSAT CZTI

Data Quality Report

Orbit 34619

Creation date: 2024-06-27T21:02:49.351345
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/AS1A11_058T02_9000004954_34619cztM0_level2.evt modeM0/AS1A11_058T02_9000004954_34619cztM0_level2_quad_clean.evt
Size (bytes)1,393,058,880192,309,120
Size1.3 GB 183.4 MB
Events in quadrant A7,133,7241,221,135
Events in quadrant B12,196,1061,169,515
Events in quadrant C8,016,1921,221,239
Events in quadrant D13,790,2421,134,218

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0510

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0318995
B0464904
C0334884
D0519234

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03200
B03200
C03200
D03200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15614230.147304%
B1561415199.728449%
C156141631.043935%
D156146854.387089%

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 19850 15617 7 7 0.04% 0.04%
B 19850 15617 1086 1086 5.47% 6.95%
C 19850 15617 100 100 0.50% 0.64%
D 19850 15617 577 577 2.91% 3.69%

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 10 83 98132 271.0 1782 1749 355.7
A 15 169 48180 130.55 1782 1749 355.7
A 13 6 41635 112.15 1782 1749 355.7
B 5 172 4716367 14554.74 1708 1663 323.9
B 4 232 256811 787.67 1708 1663 323.9
B 4 171 204467 626.08 1708 1663 323.9
C 15 214 643253 1620.61 1722 1732 395.9
C 0 10 417224 1049.61 1722 1732 395.9
C 14 67 187761 469.95 1722 1732 395.9
D 8 195 4039331 9337.98 1694 1657 432.4
D 2 249 1685286 3893.75 1694 1657 432.4
D 10 230 251349 577.47 1694 1657 432.4

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