ASTROSAT CZTI

Data Quality Report

Orbit 03500

Creation date: 2024-06-27T14:30:12.437549
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/AS1G05_192T01_9000000466_03500cztM0_level2.evt modeM0/AS1G05_192T01_9000000466_03500cztM0_level2_quad_clean.evt
Size (bytes)476,916,48058,861,440
Size454.8 MB 56.1 MB
Events in quadrant A3,723,667334,504
Events in quadrant B4,013,582333,591
Events in quadrant C3,228,728332,242
Events in quadrant D3,031,326323,382

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154083
B0163302
C0140372
D0137172

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65761572.387470%
B65761031.566302%
C6576851.292579%
D6576781.186131%

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 7731 6576 53 53 0.69% 0.81%
B 7731 6576 10 10 0.13% 0.15%
C 7731 6576 19 19 0.25% 0.29%
D 7731 6576 15 15 0.19% 0.23%

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 0 50 359871 2216.47 792 776 162.0
A 14 238 162171 996.19 792 776 162.0
A 8 15 103935 636.74 792 776 162.0
B 15 204 736309 4809.56 799 781 152.9
B 4 81 73446 475.15 799 781 152.9
B 15 85 29394 187.1 799 781 152.9
C 1 192 192220 1083.83 763 768 176.6
C 1 16 20389 111.08 763 768 176.6
C 15 208 17524 94.86 763 768 176.6
D 13 223 49064 262.01 766 744 184.4
D 7 39 25031 131.69 766 744 184.4
D 13 239 22341 117.11 766 744 184.4

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
Veto Counter