ASTROSAT CZTI

Data Quality Report

Orbit 01358

Creation date: 2024-06-27T14:11:28.851984
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/AS1G04_002T02_9000000230_01358cztM0_level2.evt modeM0/AS1G04_002T02_9000000230_01358cztM0_level2_quad_clean.evt
Size (bytes)1,180,212,48096,802,560
Size1.1 GB 92.3 MB
Events in quadrant A12,602,075568,743
Events in quadrant B8,092,194651,200
Events in quadrant C7,476,796643,828
Events in quadrant D7,154,277626,271

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0421233
B0284962
C0266372
D0257522

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6320139422.056962%
B6320400.632911%
C632080.126582%
D6320310.490506%

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 7469 6320 2828 2828 37.86% 44.75%
B 7470 6321 316 316 4.23% 5.00%
C 7470 6321 149 149 1.99% 2.36%
D 7470 6320 347 347 4.65% 5.49%

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 15 127 5758562 13573.81 1756 1766 424.1
A 4 32 80139 184.79 1756 1766 424.1
A 12 133 19861 42.67 1756 1766 424.1
B 8 4 201147 428.34 1999 2005 464.9
B 5 249 86561 181.87 1999 2005 464.9
B 12 52 80415 168.65 1999 2005 464.9
C 15 241 198857 384.04 1852 1916 512.8
C 3 111 21813 38.8 1852 1916 512.8
C 3 79 18539 32.42 1852 1916 512.8
D 12 22 346467 627.94 1783 1854 548.8
D 9 53 52335 91.98 1783 1854 548.8
D 13 252 17472 28.46 1783 1854 548.8

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