ASTROSAT CZTI

Data Quality Report

Orbit 11577

Creation date: 2024-06-27T16:15:21.104930
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/AS1A04_137T01_9000001700_11577cztM0_level2.evt modeM0/AS1A04_137T01_9000001700_11577cztM0_level2_quad_clean.evt
Size (bytes)556,971,84065,332,800
Size531.2 MB 62.3 MB
Events in quadrant A5,066,662378,817
Events in quadrant B4,845,786371,602
Events in quadrant C3,099,977401,900
Events in quadrant D3,424,857381,974

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193923
B0184452
C0132662
D0142792

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63534166.548088%
B63534857.634189%
C6353500.787030%
D6353921.448135%

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 7539 6355 228 228 3.02% 3.59%
B 7539 6355 293 293 3.89% 4.61%
C 7539 6355 0 0 0.00% 0.00%
D 7539 6355 40 40 0.53% 0.63%

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 8 5 1754879 10848.95 805 791 161.7
A 1 162 65054 397.46 805 791 161.7
A 1 178 36669 221.9 805 791 161.7
B 4 239 881814 5767.54 804 787 152.8
B 15 255 353691 2310.24 804 787 152.8
B 3 64 261597 1707.36 804 787 152.8
C 13 61 5856 27.82 793 802 181.7
C 12 4 4360 19.59 793 802 181.7
C 9 54 2003 6.61 793 802 181.7
D 2 120 93325 495.23 786 767 186.9
D 13 122 79197 419.64 786 767 186.9
D 10 253 76779 406.7 786 767 186.9

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