ASTROSAT CZTI

Data Quality Report

Orbit 08081

Creation date: 2024-06-27T15:27:42.199897
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/AS1A02_055T01_9000001114_08081cztM0_level2.evt modeM0/AS1A02_055T01_9000001114_08081cztM0_level2_quad_clean.evt
Size (bytes)586,906,560118,111,680
Size559.7 MB 112.6 MB
Events in quadrant A3,803,867742,410
Events in quadrant B3,973,562769,626
Events in quadrant C5,485,937759,076
Events in quadrant D3,952,431733,898

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172923
B0176152
C0218892
D0179452

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82281011.227516%
B82281712.078269%
C82282943.573165%
D8228991.203209%

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 8623 8231 1 1 0.01% 0.01%
B 8623 8231 1 1 0.01% 0.01%
C 8623 8231 322 322 3.73% 3.91%
D 8623 8231 39 39 0.45% 0.47%

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 13 248 12946 58.72 985 959 204.1
A 0 226 9105 39.91 985 959 204.1
A 12 194 8813 38.48 985 959 204.1
B 11 51 50340 254.49 1000 972 194.0
B 10 16 22666 111.83 1000 972 194.0
B 12 111 21515 105.9 1000 972 194.0
C 9 68 1654727 7245.38 969 973 228.2
C 1 16 38241 163.28 969 973 228.2
C 13 61 7255 27.52 969 973 228.2
D 1 52 233771 916.43 954 931 254.1
D 2 234 29419 112.13 954 931 254.1
D 1 83 28826 109.79 954 931 254.1

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