ASTROSAT CZTI

Data Quality Report

Orbit 35654

Creation date: 2022-05-03T11:09:48.916985
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_001T07_9000005104_35654cztM0_level2.evt modeM0/AS1C07_001T07_9000005104_35654cztM0_level2_quad_clean.evt
Size (bytes)603,054,72083,759,040
Size575.1 MB 79.9 MB
Events in quadrant A8,365,393477,537
Events in quadrant B3,613,705565,414
Events in quadrant C2,919,805593,707
Events in quadrant D3,034,005556,046

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0281583
B0139502
C0116662
D0123022

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4884208042.588043%
B48843346.838657%
C48841563.194103%
D48841953.992629%

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 7036 4885 2255 2255 32.05% 46.16%
B 7036 4885 235 235 3.34% 4.81%
C 7036 4885 119 119 1.69% 2.44%
D 7036 4885 155 155 2.20% 3.17%

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 6237643 60887.33 512 503 102.4
A 10 83 120792 1174.27 512 503 102.4
A 13 6 11698 109.29 512 503 102.4
B 5 172 1051753 10138.46 554 541 103.7
B 5 255 250673 2412.41 554 541 103.7
B 4 232 62715 599.64 554 541 103.7
C 0 10 386468 2983.69 564 569 129.3
C 15 214 201732 1555.35 564 569 129.3
C 15 208 104602 804.36 564 569 129.3
D 10 118 250411 1873.04 552 538 133.4
D 2 250 194649 1455.05 552 538 133.4
D 13 249 99438 741.35 552 538 133.4

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