ASTROSAT CZTI

Data Quality Report

Orbit 26588

Creation date: 2024-06-27T19:30:44.380891
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_095T02_9000003846_26588cztM0_level2.evt modeM0/AS1A09_095T02_9000003846_26588cztM0_level2_quad_clean.evt
Size (bytes)1,507,420,800278,395,200
Size1.4 GB 265.5 MB
Events in quadrant A8,609,7181,878,866
Events in quadrant B10,592,9021,892,449
Events in quadrant C10,175,2871,818,801
Events in quadrant D15,164,0541,705,124

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360440
B0423040
C0408960
D0561710

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A164871630.988658%
B164873752.274519%
C164876433.900042%
D16488205812.481805%

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 19732 16487 67 67 0.34% 0.41%
B 19732 16487 205 205 1.04% 1.24%
C 19732 16487 257 257 1.30% 1.56%
D 19733 16488 2015 2015 10.21% 12.22%

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 0 13 527546 1291.54 2065 2025 406.9
A 5 168 116690 281.81 2065 2025 406.9
A 13 254 26762 60.79 2065 2025 406.9
B 3 64 1260424 3364.16 2027 1978 374.1
B 0 189 1134342 3027.11 2027 1978 374.1
B 3 112 135555 357.09 2027 1978 374.1
C 4 254 1284035 2858.36 1961 1974 448.5
C 3 233 490389 1088.92 1961 1974 448.5
C 15 208 378099 838.57 1961 1974 448.5
D 7 80 5646676 12226.02 1925 1870 461.7
D 1 52 1288594 2786.9 1925 1870 461.7
D 2 250 599856 1295.17 1925 1870 461.7

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