ASTROSAT CZTI

Data Quality Report

Orbit 26285

Creation date: 2024-06-27T19:27:00.213402
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_079T03_9000003790_26285cztM0_level2.evt modeM0/AS1A09_079T03_9000003790_26285cztM0_level2_quad_clean.evt
Size (bytes)386,190,72081,832,320
Size368.3 MB 78.0 MB
Events in quadrant A2,847,855527,001
Events in quadrant B2,469,706553,547
Events in quadrant C3,020,168536,549
Events in quadrant D3,029,252521,832

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116270
B0104150
C0121190
D0122180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A48301092.256729%
B4830280.579710%
C48301823.768116%
D4830972.008282%

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 6055 4831 60 60 0.99% 1.24%
B 6055 4831 0 0 0.00% 0.00%
C 6055 4831 69 69 1.14% 1.43%
D 6055 4831 80 80 1.32% 1.66%

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 0 13 450071 3649.95 620 609 123.1
A 13 254 8744 66.06 620 609 123.1
A 3 137 5511 39.81 620 609 123.1
B 12 111 13342 106.86 630 616 119.1
B 11 111 11723 93.26 630 616 119.1
B 14 111 10301 81.32 630 616 119.1
C 4 254 510233 3593.75 610 616 141.8
C 14 238 98261 688.58 610 616 141.8
C 3 233 30887 213.47 610 616 141.8
D 1 52 590163 4069.02 610 596 144.9
D 6 17 71993 492.76 610 596 144.9
D 11 176 32827 222.45 610 596 144.9

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