ASTROSAT CZTI

Data Quality Report

Orbit 35916

Creation date: 2022-06-09T01:18:54.801539
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/AS1A11_080T01_9000005146_35916cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35916cztM0_level2_quad_clean.evt
Size (bytes)468,889,92065,528,640
Size447.2 MB 62.5 MB
Events in quadrant A2,793,996420,132
Events in quadrant B4,215,119392,496
Events in quadrant C2,957,358409,813
Events in quadrant D3,871,890388,068

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114343
B0159232
C0116582
D0150092

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5328150.281532%
B53285269.872372%
C5328961.801802%
D53281953.659910%

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 9423 5330 4 4 0.04% 0.08%
B 9423 5330 384 384 4.08% 7.20%
C 9423 5330 66 66 0.70% 1.24%
D 9423 5330 121 121 1.28% 2.27%

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 169546 1297.02 649 638 130.2
A 15 169 74489 567.09 649 638 130.2
A 9 143 25043 187.4 649 638 130.2
B 5 172 1516156 13026.76 612 599 116.3
B 5 63 138416 1184.59 612 599 116.3
B 0 213 39191 331.71 612 599 116.3
C 0 10 289651 2003.08 624 628 144.3
C 15 214 223894 1547.35 624 628 144.3
C 10 49 8853 57.0 624 628 144.3
D 8 195 337036 2209.58 618 602 152.3
D 7 223 301269 1974.68 618 602 152.3
D 13 249 204553 1339.48 618 602 152.3

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