ASTROSAT CZTI

Data Quality Report

Orbit 27055

Creation date: 2024-06-27T19:35:58.606267
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_120T02_9000003904_27055cztM0_level2.evt modeM0/AS1A09_120T02_9000003904_27055cztM0_level2_quad_clean.evt
Size (bytes)712,569,600114,217,920
Size679.6 MB 108.9 MB
Events in quadrant A6,017,479731,146
Events in quadrant B7,821,878751,904
Events in quadrant C3,416,119782,964
Events in quadrant D3,889,535743,455

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222010
B0274600
C0140090
D0158490

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A643582912.882673%
B6435192029.836830%
C6435851.320901%
D6435981.522922%

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 7614 6434 768 768 10.09% 11.94%
B 7614 6434 1462 1462 19.20% 22.72%
C 7614 6434 1 1 0.01% 0.02%
D 7614 6434 54 54 0.71% 0.84%

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 14 235 2869509 17647.8 814 804 162.6
A 13 254 10646 60.55 814 804 162.6
A 3 137 7162 39.11 814 804 162.6
B 0 189 4667030 31673.6 776 760 147.3
B 10 246 85241 573.44 776 760 147.3
B 0 219 21094 138.02 776 760 147.3
C 14 238 134944 683.92 835 844 196.1
C 2 16 22813 112.04 835 844 196.1
C 15 208 8587 39.49 835 844 196.1
D 1 52 551328 2819.69 824 807 195.2
D 2 250 163134 831.42 824 807 195.2
D 12 233 35982 180.16 824 807 195.2

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