ASTROSAT CZTI

Data Quality Report

Orbit 23555

Creation date: 2024-06-27T18:56:06.449974
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_011T01_9000003482_23555cztM0_level2.evt modeM0/AS1A07_011T01_9000003482_23555cztM0_level2_quad_clean.evt
Size (bytes)534,024,00090,694,080
Size509.3 MB 86.5 MB
Events in quadrant A3,503,114564,037
Events in quadrant B3,831,224571,909
Events in quadrant C3,826,211548,135
Events in quadrant D4,504,127541,204

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D041

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01543283
B01611994
C01621479
D01853578

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74931351.801682%
B74901672.229640%
C74932202.936074%
D74941522.028289%

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 7823 7498 0 0 0.00% 0.00%
B 7820 7498 16 16 0.20% 0.21%
C 7821 7498 54 54 0.69% 0.72%
D 7825 7503 45 45 0.58% 0.60%

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 12915 65.36 906 885 184.0
A 6 16 9060 44.42 906 885 184.0
A 3 137 8151 39.48 906 885 184.0
B 0 189 127724 741.05 894 873 171.2
B 0 229 88279 510.62 894 873 171.2
B 3 64 62110 357.74 894 873 171.2
C 10 9 306621 1527.47 857 861 200.2
C 14 238 133260 661.42 857 861 200.2
C 7 247 21400 102.61 857 861 200.2
D 1 52 506067 2361.39 876 848 214.0
D 9 85 456684 2130.57 876 848 214.0
D 12 233 87897 406.87 876 848 214.0

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