ASTROSAT CZTI

Data Quality Report

Orbit 01229

Creation date: 2024-06-27T14:09:28.508029
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_003T02_9000000224_01229cztM0_level2.evt modeM0/AS1G04_003T02_9000000224_01229cztM0_level2_quad_clean.evt
Size (bytes)948,009,60097,090,560
Size904.1 MB 92.6 MB
Events in quadrant A7,036,405641,402
Events in quadrant B7,287,911651,128
Events in quadrant C6,955,937623,869
Events in quadrant D7,029,693602,735

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0251882
B0259451
C0249621
D0251941

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6041150.248303%
B6041140.231750%
C604180.132428%
D6041570.943552%

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 7286 6042 162 162 2.22% 2.68%
B 7286 6042 202 202 2.77% 3.34%
C 7286 6042 161 161 2.21% 2.66%
D 7286 6042 423 423 5.81% 7.00%

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 12 133 55101 123.27 1809 1823 432.2
A 3 80 28299 61.26 1809 1823 432.2
A 11 79 6343 10.46 1809 1823 432.2
B 15 22 31392 67.13 1891 1905 439.2
B 5 191 24600 51.67 1891 1905 439.2
B 0 190 13696 26.84 1891 1905 439.2
C 15 241 322317 684.59 1686 1741 468.3
C 3 111 20526 40.12 1686 1741 468.3
C 3 79 18008 34.74 1686 1741 468.3
D 12 22 601611 1190.13 1624 1679 504.1
D 6 6 275205 542.61 1624 1679 504.1
D 10 170 65034 125.68 1624 1679 504.1

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