ASTROSAT CZTI

Data Quality Report

Orbit 41068

Creation date: 2024-06-27T22:24:01.763456
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/AS1A12_093T02_9000005594_41068cztM0_level2.fits modeM0/AS1A12_093T02_9000005594_41068cztM0_level2_quad_clean.evt
Size (bytes)361,618,560105,946,560
Size344.9 MB 101.0 MB
Events in quadrant A3,414,355728,019
Events in quadrant B2,823,963749,078
Events in quadrant C3,032,476696,807
Events in quadrant D3,671,271635,730

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135693
B0117012
C0121822
D0146032

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5703520.911801%
B5703130.227950%
C5703330.578643%
D57031662.910749%

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 9589 5705 28 28 0.29% 0.49%
B 9589 5705 5 5 0.05% 0.09%
C 9589 5705 17 17 0.18% 0.30%
D 9589 5705 131 131 1.37% 2.30%

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 10 83 511155 3604.39 703 692 141.6
A 13 248 150785 1059.81 703 692 141.6
A 12 189 17143 116.16 703 692 141.6
B 0 229 47585 353.07 691 673 132.9
B 0 190 40691 301.19 691 673 132.9
B 15 32 26294 192.83 691 673 132.9
C 15 214 244383 1554.54 676 681 156.8
C 14 254 85096 538.47 676 681 156.8
C 0 10 67756 427.86 676 681 156.8
D 2 16 378308 2300.05 674 657 164.2
D 2 249 257837 1566.33 674 657 164.2
D 12 79 206778 1255.36 674 657 164.2

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