ASTROSAT CZTI

Data Quality Report

Orbit 23855

Creation date: 2024-06-27T18:59:26.379414
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/AS1A07_149T01_9000003534_23855cztM0_level2.evt modeM0/AS1A07_149T01_9000003534_23855cztM0_level2_quad_clean.evt
Size (bytes)467,421,120108,161,280
Size445.8 MB 103.2 MB
Events in quadrant A3,043,510731,989
Events in quadrant B3,192,999745,432
Events in quadrant C3,203,890698,108
Events in quadrant D4,302,054675,115

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128161
B0132841
C0133501
D0169981

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6095440.721903%
B6096841.377953%
C6096931.525591%
D60951622.657916%

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 7430 6096 0 0 0.00% 0.00%
B 7431 6097 16 16 0.22% 0.26%
C 7431 6097 6 6 0.08% 0.10%
D 7430 6096 114 114 1.53% 1.87%

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 13 254 11021 65.43 788 775 156.6
A 0 226 6820 38.6 788 775 156.6
A 3 137 6520 36.69 788 775 156.6
B 15 32 99455 684.88 786 769 144.1
B 12 111 16412 108.56 786 769 144.1
B 11 111 14380 94.46 786 769 144.1
C 14 238 122520 714.33 741 745 170.5
C 0 10 110110 641.53 741 745 170.5
C 7 247 66901 388.07 741 745 170.5
D 13 174 578567 3232.82 742 721 178.7
D 1 52 512964 2865.79 742 721 178.7
D 8 195 177526 989.15 742 721 178.7

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