ASTROSAT CZTI

Data Quality Report

Orbit 27464

Creation date: 2024-06-27T19:40:21.220113
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/AS1T03_249T01_9000003934_27464cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27464cztM0_level2_quad_clean.evt
Size (bytes)521,844,48081,434,880
Size497.7 MB 77.7 MB
Events in quadrant A3,685,887495,938
Events in quadrant B3,979,151496,386
Events in quadrant C3,894,629473,293
Events in quadrant D3,731,123474,437

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156830
B0164760
C0163370
D0161610

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75591101.455219%
B75601722.275132%
C75602293.029101%
D75601131.494709%

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 7859 7560 0 0 0.00% 0.00%
B 7860 7560 12 12 0.15% 0.16%
C 7860 7560 23 23 0.29% 0.30%
D 7860 7560 19 19 0.24% 0.25%

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 12590 60.25 953 929 193.5
A 3 137 9563 44.61 953 929 193.5
A 0 226 8071 36.9 953 929 193.5
B 3 64 231740 1252.43 938 909 184.3
B 4 52 29992 157.8 938 909 184.3
B 12 111 22466 116.96 938 909 184.3
C 14 238 142277 657.9 906 912 214.9
C 15 208 115032 531.11 906 912 214.9
C 10 22 109284 504.36 906 912 214.9
D 1 52 121794 545.49 925 898 221.6
D 2 250 71885 320.3 925 898 221.6
D 2 234 32364 141.98 925 898 221.6

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