ASTROSAT CZTI

Data Quality Report

Orbit 26968

Creation date: 2024-06-27T19:35:04.581688
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/AS1C05_019T03_9000003898_26968cztM0_level2.evt modeM0/AS1C05_019T03_9000003898_26968cztM0_level2_quad_clean.evt
Size (bytes)820,310,400103,645,440
Size782.3 MB 98.8 MB
Events in quadrant A10,434,828493,869
Events in quadrant B7,857,301711,438
Events in quadrant C2,801,084779,043
Events in quadrant D3,363,993752,304

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0349440
B0272760
C0119810
D0141140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5721369664.604090%
B5721168129.382975%
C5722831.450542%
D57221192.079692%

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 7000 5720 3060 3060 43.71% 53.50%
B 7001 5722 1393 1393 19.90% 24.34%
C 7002 5724 4 4 0.06% 0.07%
D 7002 5724 68 68 0.97% 1.19%

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 14 235 7590133 80990.63 469 461 93.7
A 6 16 948892 10120.86 469 461 93.7
A 0 13 69839 740.34 469 461 93.7
B 0 189 5279562 44872.79 636 621 117.6
B 5 172 45258 379.43 636 621 117.6
B 0 230 17415 142.75 636 621 117.6
C 14 238 109887 705.95 671 676 154.7
C 15 208 42761 272.04 671 676 154.7
C 2 16 23272 146.06 671 676 154.7
D 1 52 457936 2890.07 670 652 158.2
D 2 250 153872 968.36 670 652 158.2
D 12 1 117622 739.26 670 652 158.2

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