ASTROSAT CZTI

Data Quality Report

Orbit 27751

Creation date: 2024-06-27T19:43:53.980502
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/AS1A10_002T05_9000004000_27751cztM0_level2.evt modeM0/AS1A10_002T05_9000004000_27751cztM0_level2_quad_clean.evt
Size (bytes)470,387,52098,213,760
Size448.6 MB 93.7 MB
Events in quadrant A3,170,707637,160
Events in quadrant B3,249,554642,060
Events in quadrant C3,670,774619,384
Events in quadrant D3,700,140609,302

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137810
B0139900
C0150630
D0155510

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6691280.418473%
B6691360.538036%
C6691791.180690%
D6691260.388582%

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 7576 6692 2 2 0.03% 0.03%
B 7576 6692 0 0 0.00% 0.00%
C 7576 6691 3 3 0.04% 0.04%
D 7576 6692 35 35 0.46% 0.52%

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 0 13 16010 93.88 812 796 162.1
A 8 192 15434 90.32 812 796 162.1
A 13 254 11986 69.05 812 796 162.1
B 0 190 40957 262.22 810 789 153.2
B 12 111 18841 117.84 810 789 153.2
B 4 52 16872 104.99 810 789 153.2
C 3 233 471280 2544.78 789 794 184.9
C 14 238 125221 673.01 789 794 184.9
C 13 61 5273 24.23 789 794 184.9
D 1 52 607521 3203.49 789 768 189.4
D 2 250 69822 364.59 789 768 189.4
D 2 234 27076 138.9 789 768 189.4

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