ASTROSAT CZTI

Data Quality Report

Orbit 26751

Creation date: 2024-06-27T19:32:26.153731
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_223T01_9000003850_26751cztM0_level2.evt modeM0/AS1T03_223T01_9000003850_26751cztM0_level2_quad_clean.evt
Size (bytes)994,824,00080,285,760
Size948.7 MB 76.6 MB
Events in quadrant A4,092,907544,627
Events in quadrant B13,284,869415,964
Events in quadrant C3,666,279530,199
Events in quadrant D8,628,028466,780

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162990
B0440100
C0146830
D0302890

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67711712.525476%
B6772462868.340224%
C67721782.628470%
D6771173725.653522%

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 7891 6772 15 15 0.19% 0.22%
B 7892 6773 4065 4065 51.51% 60.02%
C 7892 6773 13 13 0.16% 0.19%
D 7891 6772 1296 1296 16.42% 19.14%

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 0 13 560549 3091.93 916 900 181.0
A 13 254 10889 55.19 916 900 181.0
A 3 137 8108 39.82 916 900 181.0
B 0 189 11113660 107638.83 551 539 103.2
B 12 111 12023 111.23 551 539 103.2
B 11 111 10980 101.13 551 539 103.2
C 14 238 141924 705.11 863 871 200.0
C 14 176 125194 621.48 863 871 200.0
C 2 16 15811 74.68 863 871 200.0
D 7 80 2971879 14993.78 804 785 198.2
D 1 52 2114333 10666.13 804 785 198.2
D 2 250 303576 1528.05 804 785 198.2

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