ASTROSAT CZTI

Data Quality Report

Orbit 14792

Creation date: 2024-06-27T16:59:44.236271
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_022T02_9000002184_14792cztM0_level2.evt modeM0/AS1A04_022T02_9000002184_14792cztM0_level2_quad_clean.evt
Size (bytes)535,726,08086,290,560
Size510.9 MB 82.3 MB
Events in quadrant A3,249,210565,107
Events in quadrant B5,353,181531,780
Events in quadrant C3,874,281547,959
Events in quadrant D3,334,009541,679

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131832
B0200701
C0165401
D0136091

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6108951.555337%
B610861210.019646%
C6108811.326130%
D61081302.128356%

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 7410 6111 0 0 0.00% 0.00%
B 7410 6111 389 389 5.25% 6.37%
C 7410 6111 0 0 0.00% 0.00%
D 7410 6111 65 65 0.88% 1.06%

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 12 189 69802 417.25 823 809 165.4
A 9 143 14255 81.32 823 809 165.4
A 0 226 7479 40.34 823 809 165.4
B 10 16 1350592 9393.78 774 758 143.7
B 3 64 595427 4138.43 774 758 143.7
B 0 229 277265 1924.27 774 758 143.7
C 3 233 845184 4776.18 776 784 176.8
C 13 61 5562 27.03 776 784 176.8
C 3 232 2244 8.26 776 784 176.8
D 15 0 165549 787.53 784 767 209.2
D 13 172 63540 300.01 784 767 209.2
D 2 33 39923 187.13 784 767 209.2

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