ASTROSAT CZTI

Data Quality Report

Orbit 40905

Creation date: 2024-06-27T22:22:01.438946
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/AS1A12_102T01_9000005576_40905cztM0_level2.fits modeM0/AS1A12_102T01_9000005576_40905cztM0_level2_quad_clean.evt
Size (bytes)339,287,04092,724,480
Size323.6 MB 88.4 MB
Events in quadrant A3,022,824625,813
Events in quadrant B2,966,411633,060
Events in quadrant C2,767,188600,861
Events in quadrant D3,359,873550,037

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124483
B0128202
C0119152
D0139242

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5689140.246089%
B56891061.863245%
C5689130.228511%
D5689951.669889%

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 7361 5690 2 2 0.03% 0.04%
B 7361 5690 50 50 0.68% 0.88%
C 7361 5690 10 10 0.14% 0.18%
D 7361 5690 77 77 1.05% 1.35%

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 558335 4318.35 625 612 129.2
A 13 248 24955 188.48 625 612 129.2
A 7 3 11646 85.43 625 612 129.2
B 4 171 319805 2632.06 617 598 121.3
B 5 255 116822 958.34 617 598 121.3
B 15 85 48842 397.8 617 598 121.3
C 15 214 240953 1691.65 608 609 142.1
C 14 254 84027 587.13 608 609 142.1
C 0 10 64171 447.38 608 609 142.1
D 12 79 216089 1468.72 603 587 146.7
D 12 128 121719 825.56 603 587 146.7
D 2 249 119294 809.03 603 587 146.7

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