ASTROSAT CZTI

Data Quality Report

Orbit 26527

Creation date: 2024-06-27T19:30:04.207075
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/AS1C05_019T04_9000003838_26527cztM0_level2.evt modeM0/AS1C05_019T04_9000003838_26527cztM0_level2_quad_clean.evt
Size (bytes)505,048,320110,350,080
Size481.7 MB 105.2 MB
Events in quadrant A2,864,440759,602
Events in quadrant B2,876,611769,476
Events in quadrant C3,261,072733,467
Events in quadrant D5,888,098662,239

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122060
B0123360
C0134340
D0215580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5975330.552301%
B5976360.602410%
C5976681.137885%
D597692615.495315%

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 6925 5975 0 0 0.00% 0.00%
B 6926 5976 9 9 0.13% 0.15%
C 6926 5976 3 3 0.04% 0.05%
D 6926 5976 589 589 8.50% 9.86%

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 5 168 87242 604.21 719 704 143.2
A 13 254 10116 65.71 719 704 143.2
A 3 137 6414 39.87 719 704 143.2
B 5 172 50831 375.66 710 694 133.5
B 12 111 16080 115.28 710 694 133.5
B 15 33 14848 106.05 710 694 133.5
C 3 233 442697 2801.6 681 685 157.8
C 14 238 109999 692.86 681 685 157.8
C 4 254 48469 302.87 681 685 157.8
D 1 52 1620296 10769.2 627 611 150.4
D 7 80 1448120 9624.41 627 611 150.4
D 12 233 284826 1889.73 627 611 150.4

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