ASTROSAT CZTI

Data Quality Report

Orbit 30956

Creation date: 2024-06-27T20:21:36.871563
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/AS1A10_058T11_9000004474_30956cztM0_level2.evt modeM0/AS1A10_058T11_9000004474_30956cztM0_level2_quad_clean.evt
Size (bytes)1,492,269,120210,844,800
Size1.4 GB 201.1 MB
Events in quadrant A8,686,5711,315,336
Events in quadrant B14,437,9341,301,226
Events in quadrant C10,050,2051,254,599
Events in quadrant D10,782,7051,250,684

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0374583
B0563783
C0408823
D0432543

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A183402111.150491%
B183404062.213740%
C183404162.268266%
D183404122.246456%

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 20205 18341 0 0 0.00% 0.00%
B 20205 18340 51 51 0.25% 0.28%
C 20205 18341 31 31 0.15% 0.17%
D 20205 18340 219 219 1.08% 1.19%

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 13 254 31504 65.03 2250 2199 450.6
A 3 137 23670 47.65 2250 2199 450.6
A 0 226 18654 36.52 2250 2199 450.6
B 6 159 5075121 11873.43 2209 2150 427.3
B 5 172 223495 518.06 2209 2150 427.3
B 15 36 143977 331.95 2209 2150 427.3
C 3 233 832367 1648.52 2144 2157 503.6
C 0 10 468687 926.37 2144 2157 503.6
C 14 238 346083 682.92 2144 2157 503.6
D 8 195 950387 1792.32 2176 2118 529.1
D 15 47 683459 1287.8 2176 2118 529.1
D 2 250 620341 1168.5 2176 2118 529.1

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