ASTROSAT CZTI

Data Quality Report

Orbit 25585

Creation date: 2024-06-27T19:19:14.578887
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/AS1A09_043T02_9000003726_25585cztM0_level2.evt modeM0/AS1A09_043T02_9000003726_25585cztM0_level2_quad_clean.evt
Size (bytes)1,263,971,520221,544,000
Size1.2 GB 211.3 MB
Events in quadrant A8,356,2601,411,416
Events in quadrant B8,963,6961,420,894
Events in quadrant C8,828,5201,338,850
Events in quadrant D10,935,8911,319,533

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0365080
B0377940
C0376970
D0441670

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A176941040.587770%
B176941530.864700%
C176942741.548548%
D176941620.915565%

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 19619 17697 14 14 0.07% 0.08%
B 19619 17697 13 13 0.07% 0.07%
C 19619 17697 27 27 0.14% 0.15%
D 19619 17697 63 63 0.32% 0.36%

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 6 16 55827 124.09 2149 2098 433.0
A 13 254 30627 65.89 2149 2098 433.0
A 3 137 19734 40.73 2149 2098 433.0
B 0 219 257946 628.04 2139 2089 407.4
B 15 33 116462 280.75 2139 2089 407.4
B 5 171 88031 210.96 2139 2089 407.4
C 14 238 326209 676.07 2043 2061 479.5
C 2 16 310127 642.53 2043 2061 479.5
C 0 207 165911 341.74 2043 2061 479.5
D 1 52 1294109 2518.47 2083 2024 513.0
D 8 195 1257724 2447.55 2083 2024 513.0
D 7 38 170239 327.88 2083 2024 513.0

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