ASTROSAT CZTI

Data Quality Report

Orbit 40980

Creation date: 2024-06-27T22:22:56.920535
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/AS1A12_066T01_9000005584_40980cztM0_level2.fits modeM0/AS1A12_066T01_9000005584_40980cztM0_level2_quad_clean.evt
Size (bytes)323,870,40094,628,160
Size308.9 MB 90.2 MB
Events in quadrant A3,063,413644,878
Events in quadrant B2,554,292655,767
Events in quadrant C2,793,768611,115
Events in quadrant D3,153,005572,943

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123103
B0110822
C0115292
D0129652

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5444170.312270%
B544460.110213%
C5444651.193975%
D54441061.947098%

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 7327 5445 5 5 0.07% 0.09%
B 7327 5445 0 0 0.00% 0.00%
C 7327 5445 57 57 0.78% 1.05%
D 7327 5444 102 102 1.39% 1.87%

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 507920 3931.84 634 622 129.0
A 12 189 67257 516.46 634 622 129.0
A 13 248 28387 215.19 634 622 129.0
B 0 229 48023 393.16 625 608 120.6
B 5 255 47379 387.82 625 608 120.6
B 12 111 15215 121.12 625 608 120.6
C 15 214 233431 1634.51 607 611 142.4
C 0 10 179800 1258.0 607 611 142.4
C 12 249 11630 77.36 607 611 142.4
D 2 249 351972 2346.05 614 596 149.8
D 12 233 172358 1146.81 614 596 149.8
D 1 47 106402 706.44 614 596 149.8

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