ASTROSAT CZTI

Data Quality Report

Orbit 35027

Creation date: 2022-06-11T13:13:24.241101
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/AS1T05_010T01_9000005016_35027cztM0_level2.evt modeM0/AS1T05_010T01_9000005016_35027cztM0_level2_quad_clean.evt
Size (bytes)577,180,80089,501,760
Size550.4 MB 85.4 MB
Events in quadrant A3,664,764556,743
Events in quadrant B3,945,210563,314
Events in quadrant C3,895,914549,233
Events in quadrant D5,465,205518,485

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155953
B0162852
C0158022
D0214142

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7511140.186393%
B7511490.652377%
C7511220.292904%
D75111682.236719%

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 10857 7513 2 2 0.02% 0.03%
B 10857 7513 19 19 0.18% 0.25%
C 10857 7513 17 17 0.16% 0.23%
D 10857 7513 151 151 1.39% 2.01%

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 10 83 88066 479.11 912 894 181.9
A 7 3 23959 126.77 912 894 181.9
A 13 6 18051 94.3 912 894 181.9
B 5 172 172020 993.44 904 879 172.3
B 4 232 167132 965.07 904 879 172.3
B 12 111 21094 117.34 904 879 172.3
C 15 214 310319 1514.82 884 894 204.3
C 0 10 80892 391.64 884 894 204.3
C 14 67 38202 182.64 884 894 204.3
D 8 195 1146916 5349.76 879 855 214.2
D 13 249 191593 890.36 879 855 214.2
D 2 250 189059 878.53 879 855 214.2

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