ASTROSAT CZTI

Data Quality Report

Orbit 25276

Creation date: 2024-06-27T19:15:48.110689
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/AS1A09_027T02_9000003696_25276cztM0_level2.evt modeM0/AS1A09_027T02_9000003696_25276cztM0_level2_quad_clean.evt
Size (bytes)557,729,28092,928,960
Size531.9 MB 88.6 MB
Events in quadrant A2,784,350624,200
Events in quadrant B3,944,833600,263
Events in quadrant C3,055,440601,697
Events in quadrant D6,700,284568,969

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122940
B0157040
C0128370
D0240650

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5994270.450450%
B59954477.456214%
C5995971.618015%
D59954818.023353%

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 6589 5995 0 0 0.00% 0.00%
B 6590 5996 238 238 3.61% 3.97%
C 6590 5996 0 0 0.00% 0.00%
D 6590 5996 513 513 7.78% 8.56%

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 3 1 11050 72.15 717 703 143.4
A 13 254 9786 63.33 717 703 143.4
A 0 226 6272 38.83 717 703 143.4
B 3 64 1154834 8899.88 692 676 129.7
B 0 219 48233 366.72 692 676 129.7
B 12 111 14984 110.33 692 676 129.7
C 3 233 135573 834.37 692 696 161.7
C 14 238 109217 671.33 692 696 161.7
C 0 207 63999 391.6 692 696 161.7
D 8 195 3257623 19635.76 687 666 165.9
D 1 52 571019 3438.58 687 666 165.9
D 12 235 148012 888.33 687 666 165.9

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