ASTROSAT CZTI

Data Quality Report

Orbit 15658

Creation date: 2024-06-27T17:11:43.663629
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/AS1T02_084T01_9000002318_15658cztM0_level2.evt modeM0/AS1T02_084T01_9000002318_15658cztM0_level2_quad_clean.evt
Size (bytes)429,186,24087,079,680
Size409.3 MB 83.0 MB
Events in quadrant A3,030,162551,631
Events in quadrant B3,160,058561,001
Events in quadrant C3,109,097543,789
Events in quadrant D3,255,351526,123

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133273
B0135612
C0133172
D0141902

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6518450.690396%
B6518510.782449%
C6518671.027923%
D65181191.825713%

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 8603 6518 0 0 0.00% 0.00%
B 8603 6518 0 0 0.00% 0.00%
C 8603 6518 0 0 0.00% 0.00%
D 8603 6518 90 90 1.05% 1.38%

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 4 2 16688 100.77 782 768 158.0
A 0 226 7042 39.71 782 768 158.0
A 15 157 5682 31.1 782 768 158.0
B 0 189 21739 139.41 790 772 150.4
B 12 111 17721 112.69 790 772 150.4
B 11 111 14780 93.14 790 772 150.4
C 14 238 119015 673.16 756 760 175.7
C 3 233 29369 162.86 756 760 175.7
C 13 61 5522 27.11 756 760 175.7
D 1 52 159759 864.15 758 736 184.0
D 12 110 111023 599.31 758 736 184.0
D 9 68 31405 166.66 758 736 184.0

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