ASTROSAT CZTI

Data Quality Report

Orbit 11881

Creation date: 2024-06-27T16:19:32.635538
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/AS1T01_209T01_9000001758_11881cztM0_level2.evt modeM0/AS1T01_209T01_9000001758_11881cztM0_level2_quad_clean.evt
Size (bytes)457,093,440105,909,120
Size435.9 MB 101.0 MB
Events in quadrant A3,371,407703,520
Events in quadrant B3,851,460707,949
Events in quadrant C2,822,982695,932
Events in quadrant D3,371,339662,482

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142503
B0156752
C0128632
D0139872

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6268580.925335%
B62681882.999362%
C6268260.414805%
D6268340.542438%

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 7494 6270 5 5 0.07% 0.08%
B 7494 6270 114 114 1.52% 1.82%
C 7494 6270 14 14 0.19% 0.22%
D 7494 6270 23 23 0.31% 0.37%

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 189444 1258.24 740 725 150.0
A 1 162 100508 665.28 740 725 150.0
A 1 178 53219 349.99 740 725 150.0
B 4 239 699661 4984.66 742 725 140.2
B 15 204 152438 1081.98 742 725 140.2
B 3 209 20008 137.52 742 725 140.2
C 1 16 31512 187.59 711 713 164.2
C 0 207 16250 94.63 711 713 164.2
C 13 61 5387 28.47 711 713 164.2
D 8 195 408215 2388.75 703 683 170.6
D 13 249 74557 433.01 703 683 170.6
D 13 104 63086 365.78 703 683 170.6

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