ASTROSAT CZTI

Data Quality Report

Orbit 20161115_C02_018T01_9000000798_level2

Creation date: 2025-11-07T19:03:15.118683
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/AS1C02_018T01_9000000798cztM0_level2.fits modeM0/AS1C02_018T01_9000000798cztM0_level2_quad_clean.evt
Size (bytes)454,127,040449,760,960
Size433.1 MB 428.9 MB
Events in quadrant A2,695,7562,594,862
Events in quadrant B2,578,9742,554,015
Events in quadrant C2,705,0242,637,469
Events in quadrant D2,341,4822,404,914

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0500
C0520
D0510

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010160
B010140
C010100
D010180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01103380
B01221710
C01034560
D01083170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4997111752.351364%
B4988324054.821282%
C500176701.339545%
D5001210392.077501%

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 55945 50503 0 0 0.00% 0.00%
B 55945 50409 0 0 0.00% 0.00%
C 55945 50521 0 0 0.00% 0.00%
D 55945 50523 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 14 188 2695 11.39 698 647 179.9
A 0 29 2655 11.16 698 647 179.9
A 14 204 2325 9.33 698 647 179.9
B 2 9 2296 11.88 679 642 139.2
B 12 226 1857 8.73 679 642 139.2
B 3 17 1764 8.06 679 642 139.2
C 12 241 1976 6.79 713 655 194.5
C 1 80 1946 6.64 713 655 194.5
C 1 81 1908 6.44 713 655 194.5
D 3 14 1727 6.11 666 602 184.0
D 6 231 1691 5.92 666 602 184.0
D 11 82 1689 5.91 666 602 184.0

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