ASTROSAT CZTI

Data Quality Report

Orbit 44241

Creation date: 2024-06-27T23:00:52.799458
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_079T01_9000005978_44241cztM0_level2.fits modeM0/AS1A13_079T01_9000005978_44241cztM0_level2_quad_clean.evt
Size (bytes)531,334,080122,650,560
Size506.7 MB 117.0 MB
Events in quadrant A7,253,499791,623
Events in quadrant B4,118,165860,947
Events in quadrant C3,574,178826,257
Events in quadrant D4,174,885743,740

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0268202
B0171002
C0154232
D0173194

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A705377310.959875%
B70532984.225152%
C70541291.828750%
D70533244.593790%

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 9343 7055 363 363 3.89% 5.15%
B 9343 7055 74 74 0.79% 1.05%
C 9344 7057 10 10 0.11% 0.14%
D 9343 7056 128 128 1.37% 1.81%

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 1807746 10587.71 830 815 170.7
A 10 83 1573784 9216.81 830 815 170.7
A 2 79 360110 2105.29 830 815 170.7
B 4 158 266833 1616.49 842 820 164.6
B 5 172 115837 698.93 842 820 164.6
B 0 230 104302 628.83 842 820 164.6
C 14 254 145458 741.1 827 830 195.2
C 14 220 61721 312.02 827 830 195.2
C 2 14 53959 272.24 827 830 195.2
D 13 249 355289 1723.79 819 793 205.6
D 1 52 260623 1263.47 819 793 205.6
D 5 222 159040 769.5 819 793 205.6

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