ASTROSAT CZTI

Data Quality Report

Orbit 49670

Creation date: 2024-12-11T10:04:00.053357
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/AS1T05_233T01_9000006438_49670cztM0_level2.fits modeM0/AS1T05_233T01_9000006438_49670cztM0_level2_quad_clean.evt
Size (bytes)1,429,724,16050,797,440
Size1.3 GB 48.4 MB
Events in quadrant A19,387,818215,973
Events in quadrant B7,223,689686,194
Events in quadrant C7,585,5483,113
Events in quadrant D18,156,593108,920

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0627090
B0265240
C0277300
D0589720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7363732999.538232%
B7364141719.242260%
C73647364100.000000%
D7363734299.714790%

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 7363 7363 6901 6901 93.73% 93.73%
B 7364 7364 1079 1079 14.65% 14.65%
C 7364 7364 46 46 0.62% 0.62%
D 7362 7362 6303 6303 85.62% 85.62%

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 98 5499331 67458.96 260 250 81.5
A 10 83 3933444 48249.73 260 250 81.5
A 3 130 1906051 23379.06 260 250 81.5
B 3 232 2397424 15497.44 720 698 154.7
B 10 44 588208 3798.89 720 698 154.7
B 4 206 475486 3070.02 720 698 154.7
C 15 180 2061082 101788.82 23 20 20.2
C 15 181 1332814 65822.15 23 20 20.2
C 15 163 891343 44019.4 23 20 20.2
D 15 40 4245853 41797.77 159 144 101.6
D 12 191 2458108 24197.94 159 144 101.6
D 7 60 2019226 19877.28 159 144 101.6

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