ASTROSAT CZTI

Data Quality Report

Orbit 13944

Creation date: 2024-06-27T16:48:16.818827
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/AS1T02_041T01_9000002058_13944cztM0_level2.evt modeM0/AS1T02_041T01_9000002058_13944cztM0_level2_quad_clean.evt
Size (bytes)488,263,680108,118,080
Size465.6 MB 103.1 MB
Events in quadrant A3,091,299685,673
Events in quadrant B3,921,817691,747
Events in quadrant C3,135,713724,051
Events in quadrant D4,166,207688,742

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141522
B0163231
C0141321
D0173601

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69551071.538462%
B69551992.861251%
C6955410.589504%
D6955911.308411%

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 7216 6956 0 0 0.00% 0.00%
B 7215 6955 73 73 1.01% 1.05%
C 7215 6955 0 0 0.00% 0.00%
D 7215 6955 22 22 0.30% 0.32%

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 1 162 21170 125.75 790 772 162.2
A 14 111 11059 63.42 790 772 162.2
A 1 178 6989 38.33 790 772 162.2
B 3 64 330977 2182.21 789 766 151.3
B 10 245 236609 1558.58 789 766 151.3
B 0 230 152223 1000.91 789 766 151.3
C 3 233 78398 428.31 782 785 181.2
C 13 61 5681 27.02 782 785 181.2
C 8 128 4644 21.3 782 785 181.2
D 13 122 631331 3420.61 770 749 184.3
D 12 110 217076 1173.47 770 749 184.3
D 1 52 150050 809.89 770 749 184.3

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