ASTROSAT CZTI

Data Quality Report

Orbit 23744

Creation date: 2024-06-27T18:58:13.995447
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/AS1A08_009T01_9000003516_23744cztM0_level2.evt modeM0/AS1A08_009T01_9000003516_23744cztM0_level2_quad_clean.evt
Size (bytes)508,037,760103,844,160
Size484.5 MB 99.0 MB
Events in quadrant A3,353,842662,985
Events in quadrant B3,534,353679,867
Events in quadrant C3,618,797650,599
Events in quadrant D4,373,670633,732

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150762
B0152361
C0156321
D0177911

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74431001.343544%
B74431131.518205%
C74431181.585382%
D7443570.765820%

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 7743 7443 0 0 0.00% 0.00%
B 7743 7443 0 0 0.00% 0.00%
C 7743 7444 5 5 0.06% 0.07%
D 7743 7443 2 2 0.03% 0.03%

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 13 254 12751 67.87 869 850 175.3
A 3 137 8056 41.1 869 850 175.3
A 0 226 7526 38.07 869 850 175.3
B 0 229 81939 489.24 868 844 165.8
B 0 189 32083 188.46 868 844 165.8
B 12 111 20809 120.45 868 844 165.8
C 7 247 213711 1095.06 832 835 194.4
C 14 238 131322 671.24 832 835 194.4
C 10 9 18936 93.11 832 835 194.4
D 8 195 975967 4751.64 841 816 205.2
D 1 52 166746 808.53 841 816 205.2
D 2 234 30409 144.2 841 816 205.2

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