ASTROSAT CZTI

Data Quality Report

Orbit 12210

Creation date: 2024-06-27T16:23:52.572450
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/AS1A04_066T01_9000001802_12210cztM0_level2.evt modeM0/AS1A04_066T01_9000001802_12210cztM0_level2_quad_clean.evt
Size (bytes)1,516,394,880283,446,720
Size1.4 GB 270.3 MB
Events in quadrant A14,522,7481,877,081
Events in quadrant B13,762,1081,837,732
Events in quadrant C7,325,4001,923,681
Events in quadrant D9,223,1421,828,779

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03300
B03300
C03300
D03300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0546474
B0519473
C0332273
D0388573

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A161969746.013831%
B16196189411.694245%
C161961060.654483%
D161963932.426525%

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 18157 16200 361 361 1.99% 2.23%
B 18157 16199 1056 1056 5.82% 6.52%
C 18157 16200 26 26 0.14% 0.16%
D 18157 16200 273 273 1.50% 1.69%

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 13 251 6130840 16513.44 1833 1791 371.2
A 1 162 432730 1161.07 1833 1791 371.2
A 1 178 245147 655.67 1833 1791 371.2
B 4 239 4459534 13386.82 1772 1728 333.0
B 15 204 981648 2942.71 1772 1728 333.0
B 3 64 535218 1602.07 1772 1728 333.0
C 15 208 147772 351.28 1812 1816 415.5
C 5 112 59558 138.97 1812 1816 415.5
C 12 4 14845 31.36 1812 1816 415.5
D 1 52 1401588 3291.43 1792 1736 425.3
D 13 104 345671 808.68 1792 1736 425.3
D 10 199 189762 442.1 1792 1736 425.3

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