ASTROSAT CZTI

Data Quality Report

Orbit 40651

Creation date: 2024-06-27T22:18:43.385014
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_029T01_9000005556_40651cztM0_level2.fits modeM0/AS1A12_029T01_9000005556_40651cztM0_level2_quad_clean.evt
Size (bytes)305,576,64082,909,440
Size291.4 MB 79.1 MB
Events in quadrant A2,660,462566,030
Events in quadrant B2,811,083579,777
Events in quadrant C2,472,900548,726
Events in quadrant D2,975,045463,591

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108023
B0116072
C0103882
D0121442

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5021100.199164%
B5021761.513643%
C5021200.398327%
D50214999.938259%

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 7054 5022 4 4 0.06% 0.08%
B 7054 5022 35 35 0.50% 0.70%
C 7054 5022 18 18 0.26% 0.36%
D 7053 5021 47 47 0.67% 0.94%

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 453197 3899.25 566 556 116.1
A 6 10 12020 98.76 566 556 116.1
A 3 137 6363 50.02 566 556 116.1
B 0 229 404432 3691.62 560 545 109.4
B 0 190 170716 1555.4 560 545 109.4
B 12 111 14232 125.1 560 545 109.4
C 15 214 223983 1740.99 547 550 128.3
C 14 254 69731 539.06 547 550 128.3
C 0 10 25710 196.05 547 550 128.3
D 12 227 362444 2845.16 519 505 127.2
D 5 51 233645 1832.69 519 505 127.2
D 12 191 173827 1362.46 519 505 127.2

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