ASTROSAT CZTI

Data Quality Report

Orbit 37670

Creation date: 2024-06-27T21:42:55.702853
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_075T01_9000005342_37670cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37670cztM0_level2_quad_clean.evt
Size (bytes)425,655,36076,034,880
Size405.9 MB 72.5 MB
Events in quadrant A3,243,783461,024
Events in quadrant B3,124,404474,448
Events in quadrant C3,151,791479,502
Events in quadrant D2,953,248458,406

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136233
B0135602
C0131852
D0131732

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6147160.260290%
B6147801.301448%
C6147270.439239%
D6147360.585652%

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 9132 6149 13 13 0.14% 0.21%
B 9132 6147 49 49 0.54% 0.80%
C 9132 6147 30 30 0.33% 0.49%
D 9132 6147 24 24 0.26% 0.39%

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 341395 2467.36 687 673 138.1
A 6 10 109683 789.4 687 673 138.1
A 9 143 92859 667.57 687 673 138.1
B 5 172 197741 1492.63 686 669 132.0
B 15 85 70259 527.08 686 669 132.0
B 0 230 65707 492.6 686 669 132.0
C 15 214 282897 1811.91 678 683 155.8
C 14 254 129355 826.12 678 683 155.8
C 0 10 87386 556.66 678 683 155.8
D 2 249 78221 480.2 673 655 161.5
D 2 153 51296 313.51 673 655 161.5
D 13 249 37858 230.32 673 655 161.5

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