ASTROSAT CZTI

Data Quality Report

Orbit 41179

Creation date: 2024-06-27T22:25:18.697898
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/AS1A12_101T01_9000005612_41179cztM0_level2.fits modeM0/AS1A12_101T01_9000005612_41179cztM0_level2_quad_clean.evt
Size (bytes)606,211,200123,111,360
Size578.1 MB 117.4 MB
Events in quadrant A4,185,027856,106
Events in quadrant B3,739,377877,151
Events in quadrant C10,429,257650,622
Events in quadrant D3,459,965783,409

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174183
B0170862
C0365662
D0166622

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8065180.223187%
B8065540.669560%
C8065211326.199628%
D8065170.210787%

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 10991 8067 2 2 0.02% 0.02%
B 10991 8067 32 32 0.29% 0.40%
C 10990 8066 1826 1826 16.62% 22.64%
D 10991 8067 15 15 0.14% 0.19%

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 660114 3771.04 856 837 174.8
A 12 189 192081 1093.91 856 837 174.8
A 13 6 12370 65.97 856 837 174.8
B 0 229 217451 1309.25 847 821 165.5
B 5 255 148175 890.57 847 821 165.5
B 0 245 23217 135.36 847 821 165.5
C 9 54 6880814 39714.01 741 745 173.2
C 15 214 309354 1781.39 741 745 173.2
C 0 10 266262 1532.65 741 745 173.2
D 2 249 147835 723.55 833 809 203.2
D 13 249 99376 485.07 833 809 203.2
D 2 234 43142 208.33 833 809 203.2

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