ASTROSAT CZTI

Data Quality Report

Orbit 41857

Creation date: 2024-06-27T22:33:42.278125
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_001T11_9000005710_41857cztM0_level2.fits modeM0/AS1C07_001T11_9000005710_41857cztM0_level2_quad_clean.evt
Size (bytes)385,931,52094,498,560
Size368.1 MB 90.1 MB
Events in quadrant A4,099,351629,696
Events in quadrant B2,757,381642,849
Events in quadrant C3,284,062606,709
Events in quadrant D3,687,062570,694

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160143
B0124702
C0135882
D0152032

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58841923.263086%
B5884360.611829%
C58842434.129844%
D58842303.908906%

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 7167 5885 139 139 1.94% 2.36%
B 7167 5885 21 21 0.29% 0.36%
C 7167 5885 234 234 3.26% 3.98%
D 7167 5885 199 199 2.78% 3.38%

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 24 1074642 8493.61 621 609 126.5
A 10 83 602266 4757.99 621 609 126.5
A 2 79 9915 73.59 621 609 126.5
B 4 81 69983 577.02 623 603 120.2
B 5 32 64629 532.49 623 603 120.2
B 0 183 40606 332.7 623 603 120.2
C 0 10 702539 5015.34 598 602 140.0
C 15 214 228177 1626.02 598 602 140.0
C 15 111 12930 88.08 598 602 140.0
D 13 249 601520 4030.45 611 593 149.1
D 2 249 460849 3086.96 611 593 149.1
D 5 222 120191 802.15 611 593 149.1

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