ASTROSAT CZTI

Data Quality Report

Orbit 20230719_A12_088T52_9000005778_level2

Creation date: 2023-07-21T12:42:41.451075
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_088T52_9000005778cztM0_level2.fits modeM0/AS1A12_088T52_9000005778cztM0_level2_quad_clean.evt
Size (bytes)157,176,000198,293,760
Size149.9 MB 189.1 MB
Events in quadrant A946,0141,269,420
Events in quadrant B895,9741,243,441
Events in quadrant C926,3081,230,421
Events in quadrant D777,7421,048,196

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03600
B03600
C03600
D03600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0660
D0660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0413160
B0397220
C0356250
D0554000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A176071060.602033%
B176074882.771625%
C17607170.096553%
D1760711256.389504%

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 24209 17607 0 0 0.00% 0.00%
B 24209 17605 0 0 0.00% 0.00%
C 24209 17607 0 0 0.00% 0.00%
D 24209 17599 0 0 0.00% 0.00%

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 9 19 782 8.67 246 231 63.6
A 0 29 777 8.59 246 231 63.6
A 7 110 737 7.96 246 231 63.6
B 2 9 754 11.16 236 225 47.4
B 2 8 639 8.73 236 225 47.4
B 3 17 612 8.16 236 225 47.4
C 1 81 798 8.75 244 229 65.0
C 3 203 763 8.21 244 229 65.0
C 3 202 755 8.09 244 229 65.0
D 7 3 609 6.68 222 202 61.0
D 4 160 588 6.33 222 202 61.0
D 10 189 587 6.31 222 202 61.0

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