ASTROSAT CZTI

Data Quality Report

Orbit 32231

Creation date: 2024-06-27T20:37:51.543790
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/AS1A10_057T01_9000004692_32231cztM0_level2.evt modeM0/AS1A10_057T01_9000004692_32231cztM0_level2_quad_clean.evt
Size (bytes)607,656,96063,305,280
Size579.5 MB 60.4 MB
Events in quadrant A3,118,822374,862
Events in quadrant B5,526,156371,255
Events in quadrant C3,538,477369,395
Events in quadrant D5,786,023354,068

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133531
B0207522
C0145061
D0216601

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6406490.764908%
B64052303.590945%
C64062123.309397%
D640678012.176085%

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 7366 6407 0 0 0.00% 0.00%
B 7365 6406 73 73 0.99% 1.14%
C 7366 6407 30 30 0.41% 0.47%
D 7366 6407 450 450 6.11% 7.02%

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 13 254 13238 76.58 804 788 162.6
A 13 6 12934 74.71 804 788 162.6
A 3 137 8111 45.04 804 788 162.6
B 6 159 1901703 12750.14 789 769 149.1
B 5 172 293324 1962.25 789 769 149.1
B 4 80 80844 537.09 789 769 149.1
C 15 208 205438 1131.06 772 778 180.9
C 14 238 150663 828.34 772 778 180.9
C 3 233 46614 253.31 772 778 180.9
D 12 218 1347867 7582.4 742 722 177.7
D 8 195 1062861 5978.24 742 722 177.7
D 13 249 218916 1228.1 742 722 177.7

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