ASTROSAT CZTI

Data Quality Report

Orbit 23800

Creation date: 2024-06-27T18:58:52.633844
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_113T01_9000003526_23800cztM0_level2.evt modeM0/AS1A07_113T01_9000003526_23800cztM0_level2_quad_clean.evt
Size (bytes)702,478,08099,650,880
Size669.9 MB 95.0 MB
Events in quadrant A3,377,642643,827
Events in quadrant B3,827,047659,869
Events in quadrant C3,462,536645,282
Events in quadrant D10,128,116575,241

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147421
B0160931
C0148311
D0350601

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7087811.142938%
B70881672.356095%
C70881381.946953%
D7088211729.867381%

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 7362 7087 0 0 0.00% 0.00%
B 7363 7088 2 2 0.03% 0.03%
C 7363 7089 0 0 0.00% 0.00%
D 7363 7088 1875 1875 25.47% 26.45%

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 11887 61.72 876 859 178.7
A 3 137 7813 38.92 876 859 178.7
A 0 226 7583 37.63 876 859 178.7
B 3 64 368059 2152.55 879 855 170.6
B 12 111 20700 116.33 879 855 170.6
B 11 111 18146 101.36 879 855 170.6
C 14 238 133663 659.33 850 856 201.4
C 7 247 13589 63.21 850 856 201.4
C 13 61 6042 25.74 850 856 201.4
D 8 195 4886185 25870.05 772 750 188.8
D 13 174 1517977 8034.24 772 750 188.8
D 1 52 716053 3787.77 772 750 188.8

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