ASTROSAT CZTI

Data Quality Report

Orbit 12385

Creation date: 2024-06-27T16:26:30.427581
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_104T02_9000001838_12385cztM0_level2.evt modeM0/AS1A04_104T02_9000001838_12385cztM0_level2_quad_clean.evt
Size (bytes)621,331,200119,413,440
Size592.5 MB 113.9 MB
Events in quadrant A3,882,726810,161
Events in quadrant B7,260,469751,456
Events in quadrant C2,945,393823,144
Events in quadrant D4,282,358771,982

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160873
B0258882
C0134802
D0173942

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65861071.624658%
B6586151723.033708%
C6586210.318858%
D65862443.704828%

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 8557 6587 6 6 0.07% 0.09%
B 8557 6587 1459 1459 17.05% 22.15%
C 8557 6588 3 3 0.04% 0.05%
D 8557 6588 187 187 2.19% 2.84%

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 251649 1630.74 757 741 153.9
A 1 162 232486 1506.2 757 741 153.9
A 1 178 125956 813.82 757 741 153.9
B 2 32 3204683 23452.16 716 698 136.6
B 2 48 724924 5301.1 716 698 136.6
B 4 239 283044 2066.68 716 698 136.6
C 14 234 21109 117.71 750 753 172.9
C 13 61 5560 27.79 750 753 172.9
C 3 202 1839 6.28 750 753 172.9
D 1 52 1060528 5973.76 732 711 177.4
D 13 104 128284 719.08 732 711 177.4
D 10 199 119151 667.6 732 711 177.4

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