ASTROSAT CZTI

Data Quality Report

Orbit 20051

Creation date: 2024-06-27T18:10:37.218853
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_117T01_9000002988_20051cztM0_level2.evt modeM0/AS1T03_117T01_9000002988_20051cztM0_level2_quad_clean.evt
Size (bytes)511,744,320103,115,520
Size488.0 MB 98.3 MB
Events in quadrant A3,565,750672,644
Events in quadrant B3,591,005673,697
Events in quadrant C3,554,842642,075
Events in quadrant D4,294,871630,237

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151431
B0151961
C0150162
D0174981

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7237650.898162%
B7238991.367781%
C72371181.630510%
D72371512.086500%

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 7537 7238 4 4 0.05% 0.06%
B 7538 7239 8 8 0.11% 0.11%
C 7537 7238 0 0 0.00% 0.00%
D 7537 7238 81 81 1.07% 1.12%

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 14 254 30143 159.8 908 890 183.1
A 14 238 28009 148.14 908 890 183.1
A 11 29 13933 71.25 908 890 183.1
B 4 80 30965 171.86 900 878 175.1
B 12 111 21689 118.88 900 878 175.1
B 0 182 19543 106.62 900 878 175.1
C 14 238 133731 644.85 873 881 206.0
C 3 233 8133 35.2 873 881 206.0
C 13 61 5985 24.77 873 881 206.0
D 1 52 761443 3562.74 881 855 213.5
D 2 184 172170 802.47 881 855 213.5
D 15 145 36737 168.08 881 855 213.5

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