ASTROSAT CZTI

Data Quality Report

Orbit 15964

Creation date: 2024-06-27T17:15:46.524081
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/AS1T02_087T01_9000002352_15964cztM0_level2.evt modeM0/AS1T02_087T01_9000002352_15964cztM0_level2_quad_clean.evt
Size (bytes)463,443,840100,601,280
Size442.0 MB 95.9 MB
Events in quadrant A3,330,002671,807
Events in quadrant B3,564,759676,832
Events in quadrant C3,395,661635,900
Events in quadrant D3,314,856620,185

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139933
B0148352
C0140342
D0140192

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6337881.388670%
B6337901.420230%
C63371081.704276%
D6337480.757456%

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 7623 6338 1 1 0.01% 0.02%
B 7623 6338 0 0 0.00% 0.00%
C 7623 6339 5 5 0.07% 0.08%
D 7623 6339 3 3 0.04% 0.05%

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 15 239 67003 390.6 848 833 169.4
A 0 226 7800 41.12 848 833 169.4
A 12 194 6431 33.04 848 833 169.4
B 0 219 54951 341.85 843 827 158.3
B 0 189 41246 255.29 843 827 158.3
B 5 65 36539 225.56 843 827 158.3
C 3 233 162951 882.2 796 803 183.8
C 14 238 122822 663.87 796 803 183.8
C 13 61 5966 28.09 796 803 183.8
D 12 110 111447 555.94 812 788 199.0
D 2 152 105718 527.16 812 788 199.0
D 2 234 22622 109.69 812 788 199.0

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