ASTROSAT CZTI

Data Quality Report

Orbit 24913

Creation date: 2024-06-27T19:11:22.553831
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/AS1A08_003T16_9000003650_24913cztM0_level2.evt modeM0/AS1A08_003T16_9000003650_24913cztM0_level2_quad_clean.evt
Size (bytes)511,994,88072,881,280
Size488.3 MB 69.5 MB
Events in quadrant A3,453,460446,924
Events in quadrant B3,530,429455,976
Events in quadrant C4,008,052423,751
Events in quadrant D4,059,312413,001

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140902
B0142822
C0161342
D0163732

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6693831.240102%
B66931221.822800%
C66941512.255751%
D66941241.852405%

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 9088 6695 2 2 0.02% 0.03%
B 9088 6695 0 0 0.00% 0.00%
C 9089 6696 3 3 0.03% 0.04%
D 9089 6696 64 64 0.70% 0.96%

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 10658 54.88 893 875 178.3
A 12 96 9005 45.61 893 875 178.3
A 3 137 8247 41.36 893 875 178.3
B 0 189 31485 180.16 888 868 169.9
B 12 111 21185 119.55 888 868 169.9
B 11 111 18760 105.28 888 868 169.9
C 7 247 567799 2873.31 843 850 197.3
C 14 238 135976 684.82 843 850 197.3
C 0 10 16568 79.66 843 850 197.3
D 1 52 420213 2032.69 849 825 206.3
D 12 233 143558 691.8 849 825 206.3
D 8 195 115195 554.33 849 825 206.3

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