ASTROSAT CZTI

Data Quality Report

Orbit 06197

Creation date: 2024-06-27T15:04:01.515564
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/AS1A02_085T02_9000000808_06197cztM0_level2.evt modeM0/AS1A02_085T02_9000000808_06197cztM0_level2_quad_clean.evt
Size (bytes)469,134,720105,396,480
Size447.4 MB 100.5 MB
Events in quadrant A3,196,374685,399
Events in quadrant B3,470,708689,028
Events in quadrant C3,013,997695,094
Events in quadrant D4,078,047661,918

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140343
B0149232
C0136042
D0166332

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6599771.166843%
B65991001.515381%
C6599380.575845%
D6599550.833460%

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 7539 6600 1 1 0.01% 0.02%
B 7539 6600 30 30 0.40% 0.45%
C 7539 6600 0 0 0.00% 0.00%
D 7539 6600 10 10 0.13% 0.15%

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 8 15 85768 549.12 768 751 154.8
A 14 111 68665 438.65 768 751 154.8
A 4 2 55154 351.38 768 751 154.8
B 3 64 240671 1627.01 776 757 147.5
B 15 204 56097 375.3 776 757 147.5
B 4 80 41919 279.15 776 757 147.5
C 1 16 53717 302.92 758 760 174.8
C 13 61 6005 30.0 758 760 174.8
C 3 202 1952 6.82 758 760 174.8
D 2 63 1027001 5539.53 755 732 185.3
D 2 136 53625 285.5 755 732 185.3
D 5 97 43083 228.6 755 732 185.3

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