ASTROSAT CZTI

Data Quality Report

Orbit 21816

Creation date: 2024-06-27T18:32:35.969157
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/AS1A07_004T01_9000003230_21816cztM0_level2.evt modeM0/AS1A07_004T01_9000003230_21816cztM0_level2_quad_clean.evt
Size (bytes)507,024,00072,855,360
Size483.5 MB 69.5 MB
Events in quadrant A3,534,410431,352
Events in quadrant B3,564,895442,666
Events in quadrant C3,364,753429,792
Events in quadrant D4,412,015410,290

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149362
B0149152
C0144162
D0179032

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7052640.907544%
B7051711.006949%
C7051700.992767%
D7051480.680755%

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 7812 7053 18 18 0.23% 0.26%
B 7811 7052 9 9 0.12% 0.13%
C 7811 7052 0 0 0.00% 0.00%
D 7811 7052 19 19 0.24% 0.27%

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 4 2 164642 946.45 857 838 173.1
A 13 252 65892 375.88 857 838 173.1
A 13 254 12856 69.44 857 838 173.1
B 3 64 63282 377.34 865 842 165.5
B 0 189 23250 135.42 865 842 165.5
B 0 230 21712 126.12 865 842 165.5
C 14 238 128097 654.06 830 834 194.6
C 13 61 5665 24.83 830 834 194.6
C 10 23 2297 7.52 830 834 194.6
D 1 52 1113877 5468.72 832 806 203.5
D 13 153 48725 235.43 832 806 203.5
D 7 38 38788 186.61 832 806 203.5

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