ASTROSAT CZTI

Data Quality Report

Orbit 27406

Creation date: 2024-06-27T19:39:45.735870
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_27406cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27406cztM0_level2_quad_clean.evt
Size (bytes)533,531,52077,232,960
Size508.8 MB 73.7 MB
Events in quadrant A3,525,359468,597
Events in quadrant B3,596,673465,795
Events in quadrant C3,601,243448,363
Events in quadrant D4,938,351446,599

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150370
B0151570
C0152730
D0194220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7308660.903120%
B73091011.381858%
C73081492.038862%
D73093264.460254%

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 7623 7309 0 0 0.00% 0.00%
B 7624 7310 3 3 0.04% 0.04%
C 7624 7310 11 11 0.14% 0.15%
D 7624 7310 255 255 3.34% 3.49%

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 13429 68.68 907 887 182.6
A 13 248 11320 57.13 907 887 182.6
A 3 137 8632 42.41 907 887 182.6
B 4 206 27221 152.64 893 871 172.6
B 15 33 27081 151.83 893 871 172.6
B 12 111 21348 118.62 893 871 172.6
C 14 238 135144 661.2 861 865 203.1
C 2 16 109695 535.89 861 865 203.1
C 13 61 5900 24.79 861 865 203.1
D 1 52 1343034 6471.14 870 846 207.4
D 2 250 250825 1205.23 870 846 207.4
D 2 234 33095 155.48 870 846 207.4

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