ASTROSAT CZTI

Data Quality Report

Orbit 34639

Creation date: 2022-02-23T14:26:00.826026
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_34639cztM0_level2.evt modeM0/AS1T05_008T01_9000004956_34639cztM0_level2_quad_clean.evt
Size (bytes)409,478,40060,145,920
Size390.5 MB 57.4 MB
Events in quadrant A2,572,598383,546
Events in quadrant B3,068,361379,461
Events in quadrant C2,718,005370,017
Events in quadrant D3,721,403356,410

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0101792
B0118411
C0106131
D0142791

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4725661.396825%
B47251813.830688%
C4725470.994709%
D4725571.206349%

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 6818 4726 46 46 0.67% 0.97%
B 6818 4726 117 117 1.72% 2.48%
C 6818 4726 38 38 0.56% 0.80%
D 6818 4726 30 30 0.44% 0.63%

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 155320 1263.18 612 601 122.5
A 10 83 30323 242.66 612 601 122.5
A 9 143 20970 166.3 612 601 122.5
B 5 172 663572 5953.79 591 578 111.4
B 4 232 23247 203.57 591 578 111.4
B 4 173 21802 190.59 591 578 111.4
C 15 214 199666 1498.68 579 584 132.8
C 0 10 121410 909.57 579 584 132.8
C 15 208 47273 351.47 579 584 132.8
D 8 195 1144846 8087.47 587 573 141.5
D 10 199 94981 667.26 587 573 141.5
D 7 223 31331 217.39 587 573 141.5

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