ASTROSAT CZTI

Data Quality Report

Orbit 20871

Creation date: 2024-06-27T18:20:33.355945
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/AS1A05_160T01_9000003078_20871cztM0_level2.evt modeM0/AS1A05_160T01_9000003078_20871cztM0_level2_quad_clean.evt
Size (bytes)592,044,48095,497,920
Size564.6 MB 91.1 MB
Events in quadrant A3,416,767637,747
Events in quadrant B3,491,348652,866
Events in quadrant C3,353,622595,008
Events in quadrant D7,231,949556,464

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138622
B0141412
C0137172
D0259722

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6445590.915438%
B6444791.225947%
C6444871.350093%
D644487413.563004%

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 7730 6446 0 0 0.00% 0.00%
B 7729 6445 1 1 0.01% 0.02%
C 7729 6445 0 0 0.00% 0.00%
D 7729 6445 837 837 10.83% 12.99%

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 0 226 7665 38.73 888 874 175.4
A 3 137 6827 33.95 888 874 175.4
A 12 194 6132 29.99 888 874 175.4
B 0 219 25137 148.0 877 858 164.0
B 12 111 19564 114.03 877 858 164.0
B 11 111 17374 100.68 877 858 164.0
C 14 238 131992 686.11 825 834 191.2
C 13 61 5822 26.09 825 834 191.2
C 7 247 2875 10.68 825 834 191.2
D 1 20 2029151 10280.52 823 802 197.3
D 9 1 1759821 8915.44 823 802 197.3
D 5 222 153572 774.3 823 802 197.3

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