ASTROSAT CZTI

Data Quality Report

Orbit 09448

Creation date: 2024-06-27T15:46:03.255195
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/AS1A02_178T01_9000001340_09448cztM0_level2.evt modeM0/AS1A02_178T01_9000001340_09448cztM0_level2_quad_clean.evt
Size (bytes)787,688,64092,476,800
Size751.2 MB 88.2 MB
Events in quadrant A4,442,317617,429
Events in quadrant B3,893,222628,603
Events in quadrant C11,071,917381,105
Events in quadrant D3,893,117603,605

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018816
B018814
C018812
D018810

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0212352701
B0192481885
C05309015156
D0198402187

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8328700.840538%
B8476500.589901%
C7334311342.446141%
D8441470.556806%

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 9883 9070 12 12 0.12% 0.13%
B 9884 9148 4 4 0.04% 0.04%
C 9851 7950 2448 2448 24.85% 30.79%
D 9885 9118 12 12 0.12% 0.13%

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 8 5 475619 2422.53 954 934 195.9
A 1 162 126952 643.12 954 934 195.9
A 4 2 50908 255.04 954 934 195.9
B 0 214 36187 188.69 968 943 186.8
B 4 80 29803 154.51 968 943 186.8
B 0 219 27770 143.62 968 943 186.8
C 4 254 8561878 61710.5 593 596 138.7
C 9 68 185213 1330.74 593 596 138.7
C 13 61 4486 28.04 593 596 138.7
D 8 195 152580 658.88 931 908 230.2
D 1 52 85715 368.41 931 908 230.2
D 7 71 78221 335.86 931 908 230.2

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