ASTROSAT CZTI

Data Quality Report

Orbit 22581

Creation date: 2024-06-27T18:43:05.566251
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_054T01_9000003348_22581cztM0_level2.evt modeM0/AS1A07_054T01_9000003348_22581cztM0_level2_quad_clean.evt
Size (bytes)465,261,120130,740,480
Size443.7 MB 124.7 MB
Events in quadrant A3,149,555894,132
Events in quadrant B3,712,475895,054
Events in quadrant C3,326,292879,862
Events in quadrant D3,482,868859,853

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133592
B0152413
C0138482
D0145622

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6173781.263567%
B61722373.839922%
C61721472.381724%
D61721492.414128%

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 7478 6174 0 0 0.00% 0.00%
B 7477 6173 32 32 0.43% 0.52%
C 7477 6173 0 0 0.00% 0.00%
D 7477 6173 63 63 0.84% 1.02%

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 10585 60.57 816 801 161.5
A 0 226 7060 38.75 816 801 161.5
A 3 137 6232 33.62 816 801 161.5
B 15 33 451007 3002.62 811 792 149.9
B 0 245 28631 185.67 811 792 149.9
B 0 228 28269 183.25 811 792 149.9
C 14 238 128147 692.43 801 806 183.9
C 10 222 50883 272.3 801 806 183.9
C 0 10 12745 64.92 801 806 183.9
D 1 52 316969 1629.6 807 785 194.0
D 13 172 34293 172.7 807 785 194.0
D 1 239 29023 145.54 807 785 194.0

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