ASTROSAT CZTI

Data Quality Report

Orbit 34729

Creation date: 2022-03-03T10:04:36.487417
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/AS1C07_001T01_9000004982_34729cztM0_level2.evt modeM0/AS1C07_001T01_9000004982_34729cztM0_level2_quad_clean.evt
Size (bytes)602,164,80084,424,320
Size574.3 MB 80.5 MB
Events in quadrant A7,098,430532,296
Events in quadrant B2,749,917576,946
Events in quadrant C2,893,917569,906
Events in quadrant D5,143,512513,091

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0247182
B0115581
C0116581
D0188971

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5200117222.538462%
B52001172.250000%
C5200390.750000%
D52004508.653846%

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 7083 5201 933 933 13.17% 17.94%
B 7083 5201 84 84 1.19% 1.62%
C 7083 5201 40 40 0.56% 0.77%
D 7083 5201 396 396 5.59% 7.61%

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 15 169 4777642 42407.66 568 557 112.6
A 9 143 61673 542.55 568 557 112.6
A 10 83 46807 410.58 568 557 112.6
B 5 172 364093 3226.29 589 573 112.7
B 0 190 24195 209.65 589 573 112.7
B 4 232 13835 117.7 589 573 112.7
C 0 207 232083 1737.37 577 580 133.2
C 15 214 224198 1678.19 577 580 133.2
C 0 10 163626 1223.61 577 580 133.2
D 8 195 1426076 10406.94 560 544 137.0
D 2 249 691402 5043.53 560 544 137.0
D 10 118 333695 2432.13 560 544 137.0

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