ASTROSAT CZTI

Data Quality Report

Orbit 12042

Creation date: 2024-06-27T16:21:37.968105
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/AS1A03_085T02_9000001784_12042cztM0_level2.evt modeM0/AS1A03_085T02_9000001784_12042cztM0_level2_quad_clean.evt
Size (bytes)544,705,920112,248,000
Size519.5 MB 107.0 MB
Events in quadrant A3,720,039754,152
Events in quadrant B5,105,331744,270
Events in quadrant C3,279,819729,242
Events in quadrant D3,934,422702,196

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154233
B0199512
C0141862
D0160322

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67351562.316258%
B67354506.681514%
C6735440.653304%
D67351001.484781%

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 9326 6738 16 16 0.17% 0.24%
B 9326 6737 177 177 1.90% 2.63%
C 9326 6737 2 2 0.02% 0.03%
D 9326 6737 35 35 0.38% 0.52%

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 1 162 106716 599.28 875 862 176.6
A 1 178 53588 298.5 875 862 176.6
A 1 161 47034 261.4 875 862 176.6
B 4 239 1156579 7047.92 858 840 164.0
B 4 206 189158 1148.4 858 840 164.0
B 15 204 157330 954.31 858 840 164.0
C 14 234 41054 210.34 830 839 191.2
C 13 61 6030 27.15 830 839 191.2
C 3 202 2003 6.09 830 839 191.2
D 1 52 315848 1590.94 833 810 198.0
D 8 195 241512 1215.54 833 810 198.0
D 13 104 99913 500.47 833 810 198.0

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