ASTROSAT CZTI

Data Quality Report

Orbit 32701

Creation date: 2024-06-27T20:40:59.555921
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/AS1T04_063T01_9000004724_32701cztM0_level2.evt modeM0/AS1T04_063T01_9000004724_32701cztM0_level2_quad_clean.evt
Size (bytes)1,827,630,720289,212,480
Size1.7 GB 275.8 MB
Events in quadrant A13,023,3711,934,202
Events in quadrant B10,128,5702,023,187
Events in quadrant C10,593,0481,920,299
Events in quadrant D20,457,0031,702,693

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03500
B03500
C03500
D03500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0492625
B0405454
C0416184
D0730364

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A171009675.654971%
B17100980.573099%
C171003642.128655%
D17100264515.467836%

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 25354 17104 689 689 2.72% 4.03%
B 25354 17104 43 43 0.17% 0.25%
C 25354 17104 277 277 1.09% 1.62%
D 25354 17104 2395 2395 9.45% 14.00%

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 15 249 4224094 9789.72 2192 2166 431.3
A 12 247 93275 211.26 2192 2166 431.3
A 0 159 59550 133.06 2192 2166 431.3
B 0 219 546005 1320.33 2243 2204 411.9
B 0 230 188690 452.78 2243 2204 411.9
B 3 26 171916 412.05 2243 2204 411.9
C 0 10 1168993 2424.83 2112 2136 481.2
C 3 233 411433 850.56 2112 2136 481.2
C 0 207 229434 472.35 2112 2136 481.2
D 7 80 3516212 7355.03 2018 1985 477.8
D 2 249 1908601 3990.41 2018 1985 477.8
D 8 195 1376820 2877.43 2018 1985 477.8

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