ASTROSAT CZTI

Data Quality Report

Orbit 34645

Creation date: 2022-02-24T01:24:00.464732
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/AS1T05_008T01_9000004956_34645cztM0_level2.evt modeM0/AS1T05_008T01_9000004956_34645cztM0_level2_quad_clean.evt
Size (bytes)563,054,40094,855,680
Size537.0 MB 90.5 MB
Events in quadrant A3,027,503615,234
Events in quadrant B3,586,759616,104
Events in quadrant C3,400,580611,961
Events in quadrant D6,597,078575,599

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133113
B0147352
C0138942
D0243322

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6499140.215418%
B6499871.338667%
C6499671.030928%
D64992233.431297%

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 9154 6501 4 4 0.04% 0.06%
B 9154 6501 42 42 0.46% 0.65%
C 9154 6501 43 43 0.47% 0.66%
D 9154 6501 151 151 1.65% 2.32%

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 10 83 51024 330.0 757 743 152.4
A 9 143 25520 162.62 757 743 152.4
A 13 6 13473 83.55 757 743 152.4
B 5 172 437394 3014.94 751 731 144.8
B 15 201 34420 232.61 751 731 144.8
B 0 190 32453 219.02 751 731 144.8
C 15 214 272414 1592.88 731 737 170.6
C 0 10 175128 1022.48 731 737 170.6
C 12 250 23143 131.37 731 737 170.6
D 8 195 3040237 15882.79 725 708 191.4
D 13 249 178620 929.66 725 708 191.4
D 2 250 117513 610.35 725 708 191.4

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