ASTROSAT CZTI

Data Quality Report

Orbit 29118

Creation date: 2024-06-27T20:00:22.241828
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/AS1A10_063T01_9000004182_29118cztM0_level2.evt modeM0/AS1A10_063T01_9000004182_29118cztM0_level2_quad_clean.evt
Size (bytes)499,129,92077,834,880
Size476.0 MB 74.2 MB
Events in quadrant A3,188,125477,806
Events in quadrant B3,294,604488,447
Events in quadrant C3,546,548470,726
Events in quadrant D4,639,284459,983

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135212
B0137231
C0143501
D0179871

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6597510.773079%
B6597650.985296%
C6597661.000455%
D65972864.335304%

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 7492 6598 2 2 0.03% 0.03%
B 7492 6598 13 13 0.17% 0.20%
C 7492 6598 0 0 0.00% 0.00%
D 7492 6598 239 239 3.19% 3.62%

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 6 16 27991 164.76 815 799 165.0
A 13 254 11340 63.87 815 799 165.0
A 15 174 9263 51.29 815 799 165.0
B 10 246 51178 324.23 805 783 155.4
B 10 245 40753 257.16 805 783 155.4
B 0 230 20102 124.3 805 783 155.4
C 3 233 350993 1904.18 778 782 183.9
C 14 238 125339 677.25 778 782 183.9
C 2 114 15828 81.81 778 782 183.9
D 1 52 1218033 6611.51 777 755 184.1
D 8 195 390301 2115.78 777 755 184.1
D 12 233 30686 162.57 777 755 184.1

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