ASTROSAT CZTI

Data Quality Report

Orbit 48245

Creation date: 2024-09-05T17:32:03.811688
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/AS1A13_029T01_9000006422_48245cztM0_level2.fits modeM0/AS1A13_029T01_9000006422_48245cztM0_level2_quad_clean.evt
Size (bytes)661,256,640104,374,080
Size630.6 MB 99.5 MB
Events in quadrant A7,496,226727,942
Events in quadrant B3,763,088771,203
Events in quadrant C3,106,378742,828
Events in quadrant D9,595,983454,334

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0269492
B0154982
C0138652
D0331082

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66594646.968013%
B66591822.733143%
C6659851.276468%
D6659253838.113831%

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 7730 6659 70 70 0.91% 1.05%
B 7730 6659 9 9 0.12% 0.14%
C 7730 6659 4 4 0.05% 0.06%
D 7730 6659 2358 2358 30.50% 35.41%

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 4323104 26158.54 785 768 165.2
A 0 31 73449 439.86 785 768 165.2
A 13 248 32148 189.91 785 768 165.2
B 4 21 248897 1585.77 794 770 156.5
B 0 200 248314 1582.04 794 770 156.5
B 12 32 52100 328.05 794 770 156.5
C 14 254 23817 124.34 782 785 185.2
C 12 2 16647 85.63 782 785 185.2
C 11 16 11706 58.96 782 785 185.2
D 2 165 6528750 37873.59 666 643 172.4
D 12 233 328523 1902.23 666 643 172.4
D 2 249 57006 327.0 666 643 172.4

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