ASTROSAT CZTI

Data Quality Report

Orbit 33553

Creation date: 2024-06-27T20:50:04.790177
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/AS1A11_060T01_9000004808_33553cztM0_level2.evt modeM0/AS1A11_060T01_9000004808_33553cztM0_level2_quad_clean.evt
Size (bytes)592,680,96069,963,840
Size565.2 MB 66.7 MB
Events in quadrant A5,851,466444,899
Events in quadrant B3,528,685459,064
Events in quadrant C4,012,535438,291
Events in quadrant D4,206,766412,454

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208213
B0135862
C0152172
D0160562

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51863727.173159%
B51862164.165060%
C51862995.765523%
D51862895.572696%

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 7249 5187 390 390 5.38% 7.52%
B 7249 5187 187 187 2.58% 3.61%
C 7249 5187 280 280 3.86% 5.40%
D 7249 5186 294 294 4.06% 5.67%

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 15 169 3336435 26130.84 645 637 127.7
A 13 6 12749 94.88 645 637 127.7
A 13 254 7948 57.27 645 637 127.7
B 5 172 515074 4164.95 652 636 123.5
B 15 222 136760 1102.08 652 636 123.5
B 4 251 129653 1044.54 652 636 123.5
C 1 23 465550 3197.56 636 643 145.4
C 0 10 338314 2322.45 636 643 145.4
C 3 233 311702 2139.41 636 643 145.4
D 8 195 678798 4505.07 627 612 150.5
D 15 0 420281 2787.79 627 612 150.5
D 2 250 224064 1484.35 627 612 150.5

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