ASTROSAT CZTI

Data Quality Report

Orbit 22121

Creation date: 2024-06-27T18:37:05.694913
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/AS1A07_007T04_9000003272_22121cztM0_level2.evt modeM0/AS1A07_007T04_9000003272_22121cztM0_level2_quad_clean.evt
Size (bytes)476,438,40099,855,360
Size454.4 MB 95.2 MB
Events in quadrant A3,303,154655,041
Events in quadrant B3,652,324648,335
Events in quadrant C3,319,443627,304
Events in quadrant D3,684,560612,210

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142911
B0152251
C0142491
D0154391

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6908741.071222%
B69082133.083382%
C69091121.621074%
D69091281.852656%

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 7273 6909 0 0 0.00% 0.00%
B 7273 6909 84 84 1.15% 1.22%
C 7274 6910 0 0 0.00% 0.00%
D 7274 6910 72 72 0.99% 1.04%

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 5 16 15580 85.69 852 834 172.1
A 13 254 13139 71.5 852 834 172.1
A 3 137 7332 37.76 852 834 172.1
B 3 64 196658 1217.23 835 814 160.9
B 10 246 142006 877.55 835 814 160.9
B 0 230 21344 127.6 835 814 160.9
C 14 238 128472 670.31 814 820 190.4
C 10 22 18553 93.12 814 820 190.4
C 13 61 5706 25.66 814 820 190.4
D 1 52 307645 1549.65 826 803 198.0
D 2 133 127787 641.31 826 803 198.0
D 7 238 39189 193.86 826 803 198.0

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