ASTROSAT CZTI

Data Quality Report

Orbit 26098

Creation date: 2024-06-27T19:24:41.721081
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/AS1A09_018T01_9000003774_26098cztM0_level2.evt modeM0/AS1A09_018T01_9000003774_26098cztM0_level2_quad_clean.evt
Size (bytes)496,906,56070,709,760
Size473.9 MB 67.4 MB
Events in quadrant A3,528,913438,811
Events in quadrant B3,560,856447,090
Events in quadrant C3,548,870415,259
Events in quadrant D3,990,391407,609

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141410
B0143370
C0142880
D0156850

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6183751.213003%
B6183961.552644%
C61831452.345140%
D61831061.714378%

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 7553 6183 0 0 0.00% 0.00%
B 7553 6183 0 0 0.00% 0.00%
C 7553 6183 0 0 0.00% 0.00%
D 7553 6183 47 47 0.62% 0.76%

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 9555 47.71 915 902 181.4
A 0 226 7809 38.09 915 902 181.4
A 3 137 7490 36.33 915 902 181.4
B 12 111 19684 111.47 910 891 168.6
B 11 111 17851 100.6 910 891 168.6
B 14 111 16733 93.97 910 891 168.6
C 14 238 142338 712.06 866 876 198.7
C 3 233 22530 109.0 866 876 198.7
C 13 250 10204 46.95 866 876 198.7
D 7 80 287389 1387.95 875 857 206.4
D 13 168 234841 1133.41 875 857 206.4
D 12 233 47483 225.85 875 857 206.4

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