ASTROSAT CZTI

Data Quality Report

Orbit 31806

Creation date: 2024-06-27T20:32:58.213155
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/AS1T04_041T01_9000004642_31806cztM0_level2.evt modeM0/AS1T04_041T01_9000004642_31806cztM0_level2_quad_clean.evt
Size (bytes)770,123,52099,869,760
Size734.4 MB 95.2 MB
Events in quadrant A7,989,948615,547
Events in quadrant B5,749,127679,885
Events in quadrant C4,432,101599,972
Events in quadrant D4,678,529639,974

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0285242
B0221052
C0178102
D0187302

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7001159622.796743%
B70011762.513927%
C7001152021.711184%
D7001921.314098%

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 7251 7002 1133 1133 15.63% 16.18%
B 7251 7002 17 17 0.23% 0.24%
C 7251 7002 32 32 0.44% 0.46%
D 7251 7002 40 40 0.55% 0.57%

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 0 13 4849578 29866.03 812 794 162.4
A 13 254 11974 68.86 812 794 162.4
A 3 137 8561 47.84 812 794 162.4
B 6 159 1902059 11206.52 869 846 169.7
B 4 80 263540 1548.42 869 846 169.7
B 10 245 152259 892.49 869 846 169.7
C 14 254 528337 2883.58 766 772 183.0
C 14 238 495516 2704.19 766 772 183.0
C 0 10 356789 1945.93 766 772 183.0
D 8 195 659779 3256.56 853 832 202.3
D 12 227 379537 1871.59 853 832 202.3
D 12 218 315987 1557.52 853 832 202.3

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