ASTROSAT CZTI

Data Quality Report

Orbit 54405

Creation date: 2025-10-18T20:44:41.208958
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/AS1A14_126T19_9000006518_54405cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54405cztM0_level2_quad_clean.evt
Size (bytes)923,515,20088,778,880
Size880.7 MB 84.7 MB
Events in quadrant A3,583,230685,485
Events in quadrant B4,923,760738,344
Events in quadrant C8,514,872514,393
Events in quadrant D16,580,298224,920

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162650
B0197860
C0305330
D0544400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75331381.831939%
B75341291.712238%
C7534180323.931510%
D7534523069.418636%

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 7533 7533 125 125 1.66% 1.66%
B 7534 7534 75 75 1.00% 1.00%
C 7533 7533 1750 1750 23.23% 23.23%
D 7533 7533 5193 5193 68.94% 68.94%

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 5 243 384320 1970.29 785 763 194.7
A 7 221 42827 216.08 785 763 194.7
A 4 3 39362 198.28 785 763 194.7
B 7 0 1145206 6846.72 776 748 167.2
B 0 213 435358 2600.06 776 748 167.2
B 5 185 104857 622.83 776 748 167.2
C 1 241 4751332 25689.79 679 671 184.9
C 13 3 247880 1336.81 679 671 184.9
C 14 254 207019 1115.85 679 671 184.9
D 8 176 12663546 89009.64 495 472 142.3
D 2 172 819805 5759.15 495 472 142.3
D 15 108 537513 3774.9 495 472 142.3

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