ASTROSAT CZTI

Data Quality Report

Orbit 15087

Creation date: 2024-06-27T17:03:33.985354
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/AS1T02_065T01_9000002218_15087cztM0_level2.evt modeM0/AS1T02_065T01_9000002218_15087cztM0_level2_quad_clean.evt
Size (bytes)501,053,76087,295,680
Size477.8 MB 83.3 MB
Events in quadrant A3,618,512540,549
Events in quadrant B3,732,141545,023
Events in quadrant C3,932,340526,924
Events in quadrant D3,385,333512,884

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155492
B0157581
C0160461
D0154021

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74411712.298078%
B74411742.338395%
C74411401.881468%
D74411492.002419%

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 7607 7443 0 0 0.00% 0.00%
B 7607 7443 1 1 0.01% 0.01%
C 7607 7443 0 0 0.00% 0.00%
D 7607 7442 12 12 0.16% 0.16%

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 12 189 169049 916.59 897 875 183.5
A 0 226 7956 38.59 897 875 183.5
A 12 194 6574 31.06 897 875 183.5
B 3 64 148739 851.73 895 870 173.6
B 3 209 24127 133.96 895 870 173.6
B 12 111 21031 116.13 895 870 173.6
C 3 233 542231 2675.51 867 872 202.3
C 13 61 6281 26.73 867 872 202.3
C 3 232 3239 11.7 867 872 202.3
D 2 234 28183 128.94 868 840 212.1
D 7 38 25050 114.17 868 840 212.1
D 13 104 17519 78.66 868 840 212.1

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