ASTROSAT CZTI

Data Quality Report

Orbit 04475

Creation date: 2024-06-27T14:42:37.160687
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/AS1G05_253T03_9000000562_04475cztM0_level2.evt modeM0/AS1G05_253T03_9000000562_04475cztM0_level2_quad_clean.evt
Size (bytes)497,643,84069,589,440
Size474.6 MB 66.4 MB
Events in quadrant A4,863,992390,179
Events in quadrant B3,204,476425,469
Events in quadrant C3,075,552428,269
Events in quadrant D3,482,287406,573

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01894610
B0136872
C0137002
D0149492

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A653788613.553618%
B65391682.569200%
C65391592.431564%
D65392613.991436%

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 7204 6541 520 520 7.22% 7.95%
B 7204 6541 3 3 0.04% 0.05%
C 7204 6541 13 13 0.18% 0.20%
D 7204 6541 88 88 1.22% 1.35%

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 1986129 13102.3 733 719 151.5
A 0 50 28820 185.45 733 719 151.5
A 13 251 20779 132.38 733 719 151.5
B 15 185 62767 412.51 779 761 150.3
B 15 204 35919 233.89 779 761 150.3
B 4 48 30911 200.58 779 761 150.3
C 9 16 103363 581.95 755 759 176.3
C 7 247 13413 71.77 755 759 176.3
C 9 247 6209 30.91 755 759 176.3
D 13 235 371939 2043.79 746 724 181.6
D 5 51 99556 544.14 746 724 181.6
D 12 79 41950 226.98 746 724 181.6

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