ASTROSAT CZTI

Data Quality Report

Orbit 46561

Creation date: 2024-06-27T23:24:45.334513
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/AS1C03_005T02_9000006230_46561cztM0_level2.fits modeM0/AS1C03_005T02_9000006230_46561cztM0_level2_quad_clean.evt
Size (bytes)468,668,160111,697,920
Size447.0 MB 106.5 MB
Events in quadrant A6,135,061746,345
Events in quadrant B3,113,863787,014
Events in quadrant C2,945,639748,298
Events in quadrant D4,657,872654,739

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0223472
B0134612
C0131422
D0182092

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63922253.520025%
B6392610.954318%
C6392520.813517%
D63923846.007509%

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 7582 6392 32 32 0.42% 0.50%
B 7582 6392 2 2 0.03% 0.03%
C 7582 6392 1 1 0.01% 0.02%
D 7582 6392 297 297 3.92% 4.65%

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 3193497 21262.14 728 714 150.2
A 0 247 65237 429.69 728 714 150.2
A 13 248 33337 217.25 728 714 150.2
B 2 2 78370 552.74 737 717 140.5
B 5 172 52623 369.47 737 717 140.5
B 0 190 27609 191.42 737 717 140.5
C 12 2 24450 140.46 731 735 168.8
C 1 3 21169 121.03 731 735 168.8
C 3 233 20254 115.61 731 735 168.8
D 1 52 479268 2689.25 708 683 178.0
D 5 33 374088 2098.22 708 683 178.0
D 13 249 304209 1705.56 708 683 178.0

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