ASTROSAT CZTI

Data Quality Report

Orbit 06579

Creation date: 2024-06-27T15:09:00.361409
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/AS1C02_008T01_9000000884_06579cztM0_level2.evt modeM0/AS1C02_008T01_9000000884_06579cztM0_level2_quad_clean.evt
Size (bytes)1,221,485,760210,277,440
Size1.1 GB 200.5 MB
Events in quadrant A9,056,8071,286,175
Events in quadrant B8,696,9641,303,667
Events in quadrant C7,994,1271,292,874
Events in quadrant D10,027,8161,245,973

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0391564
B0377293
C0366113
D0423333

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03660
B03660
C03660
D03660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A179954822.678522%
B179953211.783829%
C179951430.794665%
D179954672.595165%

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 19545 17999 200 200 1.02% 1.11%
B 19545 17999 44 44 0.23% 0.24%
C 19545 17999 0 0 0.00% 0.00%
D 19545 17999 226 226 1.16% 1.26%

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 15 234 920074 2174.47 2080 2031 422.2
A 8 15 103407 240.12 2080 2031 422.2
A 0 226 19719 41.89 2080 2031 422.2
B 4 81 136004 330.68 2100 2047 405.1
B 0 219 110880 268.66 2100 2047 405.1
B 4 172 104219 252.21 2100 2047 405.1
C 8 128 19229 36.3 2037 2040 473.5
C 13 61 15876 29.22 2037 2040 473.5
C 12 4 9622 16.01 2037 2040 473.5
D 2 33 1046799 2109.87 2025 1965 495.2
D 2 152 370462 744.12 2025 1965 495.2
D 2 136 268963 539.16 2025 1965 495.2

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