ASTROSAT CZTI

Data Quality Report

Orbit 35454

Creation date: 2022-04-21T00:20:45.290565
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_068T03_9000005076_35454cztM0_level2.evt modeM0/AS1A11_068T03_9000005076_35454cztM0_level2_quad_clean.evt
Size (bytes)442,117,44072,604,800
Size421.6 MB 69.2 MB
Events in quadrant A2,729,574460,700
Events in quadrant B3,615,978458,713
Events in quadrant C3,320,268453,065
Events in quadrant D3,340,635431,509

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115173
B0141932
C0131152
D0135782

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A563670.124202%
B56361582.803407%
C56361091.933996%
D5636751.330731%

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 7159 5637 0 0 0.00% 0.00%
B 7159 5637 83 83 1.16% 1.47%
C 7159 5637 72 72 1.01% 1.28%
D 7159 5637 70 70 0.98% 1.24%

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 131039 963.95 665 651 135.3
A 13 6 22569 162.04 665 651 135.3
A 13 254 8997 61.7 665 651 135.3
B 4 251 579147 4543.83 654 638 127.3
B 5 172 176876 1384.24 654 638 127.3
B 5 236 152826 1195.34 654 638 127.3
C 0 10 408835 2729.36 640 643 149.6
C 15 214 233187 1554.9 640 643 149.6
C 0 207 115117 765.43 640 643 149.6
D 13 249 178297 1113.98 641 621 159.5
D 10 118 115664 721.29 641 621 159.5
D 8 195 114668 715.05 641 621 159.5

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