ASTROSAT CZTI

Data Quality Report

Orbit 44355

Creation date: 2024-06-27T23:02:34.435180
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/AS1A13_008T06_9000005994_44355cztM0_level2.fits modeM0/AS1A13_008T06_9000005994_44355cztM0_level2_quad_clean.evt
Size (bytes)553,403,520106,053,120
Size527.8 MB 101.1 MB
Events in quadrant A8,159,561601,372
Events in quadrant B3,622,753762,802
Events in quadrant C3,307,497729,475
Events in quadrant D4,881,045654,900

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0294052
B0150152
C0144442
D0189602

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6628149922.616174%
B66281562.353651%
C66281071.614363%
D66283114.692215%

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 7628 6628 1203 1203 15.77% 18.15%
B 7628 6628 48 48 0.63% 0.72%
C 7628 6628 61 61 0.80% 0.92%
D 7628 6628 230 230 3.02% 3.47%

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 15 223 3341035 22641.24 712 695 147.5
A 10 83 1607982 10894.39 712 695 147.5
A 13 248 420147 2843.1 712 695 147.5
B 5 172 167119 1085.19 774 750 153.3
B 5 255 99358 643.2 774 750 153.3
B 0 219 69830 450.6 774 750 153.3
C 14 96 213825 1184.61 758 762 179.9
C 14 254 95802 528.41 758 762 179.9
C 1 3 14827 78.2 758 762 179.9
D 13 249 654998 3447.53 752 728 189.8
D 5 222 395587 2080.62 752 728 189.8
D 5 235 314243 1652.0 752 728 189.8

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