ASTROSAT CZTI

Data Quality Report

Orbit 47581

Creation date: 2024-07-16T04:42:12.475980
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_080T03_9000006336_47581cztM0_level2.fits modeM0/AS1A13_080T03_9000006336_47581cztM0_level2_quad_clean.evt
Size (bytes)912,271,680113,788,800
Size870.0 MB 108.5 MB
Events in quadrant A9,149,335828,719
Events in quadrant B4,069,886873,681
Events in quadrant C3,399,833850,416
Events in quadrant D16,532,246336,736

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1139632629692456139629386793006
B1-1-1
C1-1-1
D1-1-1

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0325591
B0175851
C0161721
D0545881

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79925867.332332%
B79921161.451451%
C7991150.187711%
D7991479660.017520%

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 7992 7992 228 228 2.85% 2.85%
B 7992 7992 28 28 0.35% 0.35%
C 7991 7991 2 2 0.03% 0.03%
D 7991 7991 4818 4818 60.29% 60.29%

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 4348476 24209.53 865 844 179.6
A 9 191 1331278 7408.44 865 844 179.6
A 13 248 82073 452.32 865 844 179.6
B 0 200 262193 1520.13 879 851 171.9
B 5 255 93955 541.55 879 851 171.9
B 0 190 71716 412.2 879 851 171.9
C 14 254 16774 78.88 862 867 201.7
C 3 233 15387 72.0 862 867 201.7
C 12 250 6620 28.53 862 867 201.7
D 2 165 13675433 95063.43 561 539 143.9
D 2 249 431103 2993.14 561 539 143.9
D 2 120 47676 327.68 561 539 143.9

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