ASTROSAT CZTI

Data Quality Report

Orbit 13981

Creation date: 2024-06-27T16:48:41.834359
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/AS1A04_122T01_9000002064_13981cztM0_level2.evt modeM0/AS1A04_122T01_9000002064_13981cztM0_level2_quad_clean.evt
Size (bytes)203,359,68038,260,800
Size193.9 MB 36.5 MB
Events in quadrant A1,351,243266,694
Events in quadrant B1,379,473271,714
Events in quadrant C1,336,692255,178
Events in quadrant D1,926,444192,414

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02311
B0248
C0249
D0257

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012561
B012266
C012670
D012575

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136188070
B0142718697
C0135578134
D02365016505

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2526200.791766%
B2415160.662526%
C250070.280000%
D1995944.711779%

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 7309 3188 0 0 0.00% 0.00%
B 7307 3039 1 1 0.01% 0.03%
C 7309 3136 0 0 0.00% 0.00%
D 7304 2605 51 51 0.70% 1.96%

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 8 15 19146 267.18 342 335 70.4
A 1 162 6715 90.62 342 335 70.4
A 12 189 5960 79.9 342 335 70.4
B 4 142 21363 335.16 330 324 62.8
B 3 64 19098 299.08 330 324 62.8
B 0 189 17189 268.67 330 324 62.8
C 3 233 79219 1048.23 322 324 75.3
C 13 61 2381 27.33 322 324 75.3
C 0 207 1340 13.5 322 324 75.3
D 13 122 444665 6917.07 250 244 64.2
D 1 52 217506 3381.52 250 244 64.2
D 10 157 207016 3218.25 250 244 64.2

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