ASTROSAT CZTI

Data Quality Report

Orbit 28306

Creation date: 2024-06-27T19:50:17.400614
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/AS1A10_102T10_9000004080_28306cztM0_level2.evt modeM0/AS1A10_102T10_9000004080_28306cztM0_level2_quad_clean.evt
Size (bytes)458,746,56076,533,120
Size437.5 MB 73.0 MB
Events in quadrant A2,613,249491,311
Events in quadrant B2,789,252497,668
Events in quadrant C2,664,369477,746
Events in quadrant D5,435,911449,094

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116500
B0120200
C0116490
D0201380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5745671.166232%
B5746901.566307%
C5746781.357466%
D574679513.835712%

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 6225 5745 1 1 0.02% 0.02%
B 6226 5746 23 23 0.37% 0.40%
C 6226 5746 0 0 0.00% 0.00%
D 6226 5746 640 640 10.28% 11.14%

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 13 254 8743 59.07 676 659 136.9
A 3 137 6809 44.94 676 659 136.9
A 8 192 6002 39.04 676 659 136.9
B 10 245 64385 494.99 671 652 128.8
B 10 246 54370 417.21 671 652 128.8
B 12 111 16197 120.73 671 652 128.8
C 14 238 105807 688.59 648 650 152.7
C 3 233 28254 180.76 648 650 152.7
C 13 61 4573 25.69 648 650 152.7
D 1 52 2591440 17448.46 622 605 148.5
D 8 195 292021 1962.6 622 605 148.5
D 2 250 113982 763.56 622 605 148.5

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