ASTROSAT CZTI

Data Quality Report

Orbit 29774

Creation date: 2024-06-27T20:07:37.670485
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/AS1T03_291T01_9000004278_29774cztM0_level2.evt modeM0/AS1T03_291T01_9000004278_29774cztM0_level2_quad_clean.evt
Size (bytes)544,423,68075,648,960
Size519.2 MB 72.1 MB
Events in quadrant A3,315,512489,738
Events in quadrant B5,532,458483,664
Events in quadrant C3,545,339446,961
Events in quadrant D3,686,425449,186

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136881
B0204511
C0144001
D0148491

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6025961.593361%
B60252504.149378%
C60253215.327801%
D6025911.510373%

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 7330 6025 4 4 0.05% 0.07%
B 7330 6025 62 62 0.85% 1.03%
C 7330 6025 11 11 0.15% 0.18%
D 7330 6025 16 16 0.22% 0.27%

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 12 96 16341 92.14 854 840 168.2
A 13 254 16115 90.8 854 840 168.2
A 3 137 7649 40.48 854 840 168.2
B 6 159 1841572 12017.82 839 824 153.2
B 0 229 346024 2253.73 839 824 153.2
B 5 255 37692 240.7 839 824 153.2
C 14 238 204794 1143.1 784 792 178.5
C 3 233 107666 598.85 784 792 178.5
C 14 254 104344 580.24 784 792 178.5
D 8 195 518162 2758.09 805 786 187.6
D 2 250 46001 241.04 805 786 187.6
D 7 80 36803 192.0 805 786 187.6

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