ASTROSAT CZTI

Data Quality Report

Orbit 28505

Creation date: 2024-06-27T19:52:28.203721
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_110T05_9000004098_28505cztM0_level2.evt modeM0/AS1A10_110T05_9000004098_28505cztM0_level2_quad_clean.evt
Size (bytes)600,145,920118,831,680
Size572.3 MB 113.3 MB
Events in quadrant A3,487,562787,072
Events in quadrant B3,598,473805,758
Events in quadrant C3,571,558778,110
Events in quadrant D7,019,299715,916

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154012
B0156342
C0154863
D0259982

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7358400.543626%
B7358761.032889%
C73571401.902950%
D735795813.021612%

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 7763 7359 4 4 0.05% 0.05%
B 7763 7359 3 3 0.04% 0.04%
C 7762 7358 2 2 0.03% 0.03%
D 7762 7358 864 864 11.13% 11.74%

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 12 96 34321 189.4 882 863 176.6
A 15 174 26795 146.8 882 863 176.6
A 13 254 12832 67.76 882 863 176.6
B 0 230 79315 469.05 884 859 167.3
B 5 255 22581 129.86 884 859 167.3
B 12 111 20849 119.51 884 859 167.3
C 14 238 138584 688.62 858 862 200.0
C 3 233 33419 162.79 858 862 200.0
C 7 247 29575 143.57 858 862 200.0
D 8 195 2441420 12378.18 830 810 197.2
D 1 52 1198374 6073.76 830 810 197.2
D 2 250 56611 283.01 830 810 197.2

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