ASTROSAT CZTI

Data Quality Report

Orbit 46905

Creation date: 2024-06-27T23:29:06.465344
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/AS1A13_068T05_9000006280_46905cztM0_level2.fits modeM0/AS1A13_068T05_9000006280_46905cztM0_level2_quad_clean.evt
Size (bytes)2,142,345,600381,611,520
Size2.0 GB 363.9 MB
Events in quadrant A23,042,9842,573,723
Events in quadrant B24,044,0252,437,894
Events in quadrant C11,373,2812,598,034
Events in quadrant D18,919,3972,227,285

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05060
B05060
C05060
D05060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0838343
B0885673
C0522123
D0738685

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A249408713.492382%
B24942341213.679737%
C249422731.094539%
D2494123179.289924%

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 32097 24941 88 88 0.27% 0.35%
B 32098 24943 2023 2023 6.30% 8.11%
C 32098 24945 58 58 0.18% 0.23%
D 32098 24943 1868 1868 5.82% 7.49%

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 10 83 11845071 20557.14 2789 2727 576.1
A 13 248 327184 563.23 2789 2727 576.1
A 7 3 61316 101.7 2789 2727 576.1
B 3 112 12162970 22917.38 2689 2600 530.6
B 5 32 231315 431.04 2689 2600 530.6
B 5 255 220050 409.81 2689 2600 530.6
C 12 250 197668 302.65 2758 2770 644.0
C 14 254 159492 243.36 2758 2770 644.0
C 12 2 154650 235.85 2758 2770 644.0
D 13 249 3382489 5026.43 2658 2573 672.4
D 2 249 2329956 3461.16 2658 2573 672.4
D 1 52 1403533 2083.43 2658 2573 672.4

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