ASTROSAT CZTI

Data Quality Report

Orbit 34914

Creation date: 2022-03-14T04:34:04.332231
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_086T01_9000005002_34914cztM0_level2.evt modeM0/AS1A11_086T01_9000005002_34914cztM0_level2_quad_clean.evt
Size (bytes)451,163,52074,436,480
Size430.3 MB 71.0 MB
Events in quadrant A2,415,665489,632
Events in quadrant B3,368,392489,789
Events in quadrant C2,832,562492,242
Events in quadrant D4,705,901429,806

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103243
B0131342
C0113262
D0174602

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A502630.059690%
B50262945.849582%
C5026771.532033%
D50264689.311580%

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 7090 5027 0 0 0.00% 0.00%
B 7090 5027 212 212 2.99% 4.22%
C 7090 5027 64 64 0.90% 1.27%
D 7090 5027 456 456 6.43% 9.07%

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 58939 482.5 605 593 120.9
A 13 6 14726 116.87 605 593 120.9
A 13 254 9017 69.66 605 593 120.9
B 5 172 903220 8067.89 593 578 111.9
B 3 112 59964 530.8 593 578 111.9
B 15 85 23857 208.07 593 578 111.9
C 0 10 214998 1543.3 598 605 138.9
C 15 214 212075 1522.26 598 605 138.9
C 12 250 64402 459.24 598 605 138.9
D 7 223 1282764 9385.78 564 549 136.6
D 8 195 880900 6444.14 564 549 136.6
D 1 52 159405 1162.82 564 549 136.6

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