ASTROSAT CZTI

Data Quality Report

Orbit 34707

Creation date: 2022-03-02T15:33:31.614563
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/AS1A09_038T30_9000004974_34707cztM0_level2.evt modeM0/AS1A09_038T30_9000004974_34707cztM0_level2_quad_clean.evt
Size (bytes)350,383,68069,485,760
Size334.2 MB 66.3 MB
Events in quadrant A3,104,721439,141
Events in quadrant B2,130,686484,596
Events in quadrant C1,901,301474,384
Events in quadrant D3,216,618438,152

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115660
B087380
C077780
D0121120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A378750413.308688%
B3787421.109057%
C3787120.316874%
D37872286.020597%

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 5341 3788 464 464 8.69% 12.25%
B 5341 3788 18 18 0.34% 0.48%
C 5341 3788 9 9 0.17% 0.24%
D 5341 3787 175 175 3.28% 4.62%

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 15 174 1078994 12950.64 411 402 83.3
A 15 169 355978 4269.4 411 402 83.3
A 9 143 36661 435.36 411 402 83.3
B 4 232 120620 1413.75 440 427 85.0
B 5 172 89958 1053.09 440 427 85.0
B 5 255 68759 803.74 440 427 85.0
C 15 214 159565 1577.97 433 436 100.8
C 0 10 34613 338.91 433 436 100.8
C 14 67 11169 106.43 433 436 100.8
D 8 195 655928 5725.04 419 411 114.5
D 13 249 339670 2962.96 419 411 114.5
D 2 250 242508 2114.38 419 411 114.5

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