ASTROSAT CZTI

Data Quality Report

Orbit 24651

Creation date: 2024-06-27T19:08:22.646531
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/AS1T03_191T01_9000003618_24651cztM0_level2.evt modeM0/AS1T03_191T01_9000003618_24651cztM0_level2_quad_clean.evt
Size (bytes)438,382,080133,888,320
Size418.1 MB 127.7 MB
Events in quadrant A3,096,685944,824
Events in quadrant B3,286,101933,140
Events in quadrant C3,217,866874,525
Events in quadrant D3,267,622883,304

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128482
B0134991
C0133851
D0136241

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6007611.015482%
B6008851.414780%
C6008981.631158%
D6008641.065246%

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 7347 6008 0 0 0.00% 0.00%
B 7348 6009 31 31 0.42% 0.52%
C 7348 6009 3 3 0.04% 0.05%
D 7348 6009 14 14 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 13 254 10697 61.89 802 788 160.1
A 0 226 7054 39.14 802 788 160.1
A 3 137 6539 35.92 802 788 160.1
B 5 172 179361 1237.81 778 761 144.3
B 0 190 28603 192.96 778 761 144.3
B 0 189 18255 121.24 778 761 144.3
C 7 247 155685 921.14 737 743 168.2
C 14 238 124480 735.63 737 743 168.2
C 2 16 32169 186.83 737 743 168.2
D 8 195 215020 1176.17 767 746 182.2
D 12 235 53657 290.43 767 746 182.2
D 1 52 37719 202.95 767 746 182.2

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