ASTROSAT CZTI

Data Quality Report

Orbit 20240322_C07_001T01_9000006136_level2

Creation date: 2024-03-27T10:07:15.719521
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/AS1C07_001T01_9000006136cztM0_level2.fits modeM0/AS1C07_001T01_9000006136cztM0_level2_quad_clean.evt
Size (bytes)407,571,840563,734,080
Size388.7 MB 537.6 MB
Events in quadrant A2,419,5703,714,990
Events in quadrant B2,056,4422,882,723
Events in quadrant C2,502,1303,840,807
Events in quadrant D2,105,6223,382,747

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0770
B0770
C0770
D0770

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09580
B09580
C09580
D09580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01577120
B02129470
C0979190
D01174670

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4740017423.675105%
B474011361728.727242%
C474013090.651885%
D4740113652.879686%

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 59734 47395 0 0 0.00% 0.00%
B 59734 47251 0 0 0.00% 0.00%
C 59734 47402 0 0 0.00% 0.00%
D 59734 47344 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 7 110 1993 8.57 631 593 163.3
A 0 29 1972 8.44 631 593 163.3
A 15 236 1927 8.17 631 593 163.3
B 2 9 1951 13.58 543 519 105.4
B 2 8 1570 9.97 543 519 105.4
B 3 17 1466 8.98 543 519 105.4
C 3 202 1988 7.96 661 616 172.3
C 3 203 1944 7.71 661 616 172.3
C 1 81 1943 7.7 661 616 172.3
D 10 189 1652 6.49 604 549 169.8
D 6 38 1578 6.06 604 549 169.8
D 3 14 1543 5.85 604 549 169.8

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