ASTROSAT CZTI

Data Quality Report

Orbit 26492

Creation date: 2024-06-27T19:29:43.375600
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/AS1A09_038T06_9000003832_26492cztM0_level2.evt modeM0/AS1A09_038T06_9000003832_26492cztM0_level2_quad_clean.evt
Size (bytes)464,996,160108,362,880
Size443.5 MB 103.3 MB
Events in quadrant A2,560,338741,978
Events in quadrant B2,647,002756,819
Events in quadrant C2,836,359723,973
Events in quadrant D5,663,568672,518

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112260
B0114120
C0117290
D0206890

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5525150.271493%
B5525310.561086%
C5525631.140271%
D552572413.104072%

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 5525 5525 0 0 0.00% 0.00%
B 5525 5525 0 0 0.00% 0.00%
C 5525 5525 4 4 0.07% 0.07%
D 5525 5525 524 524 9.48% 9.48%

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 13 254 9177 64.26 663 650 132.7
A 3 137 6017 40.44 663 650 132.7
A 0 226 5700 38.06 663 650 132.7
B 0 190 25625 199.16 663 647 125.4
B 12 111 14827 113.06 663 647 125.4
B 11 111 13098 99.28 663 647 125.4
C 3 233 192542 1288.59 640 646 148.9
C 14 238 102728 685.49 640 646 148.9
C 4 254 25748 168.56 640 646 148.9
D 1 52 2804441 19170.6 617 603 146.3
D 7 80 370553 2529.45 617 603 146.3
D 12 233 112443 764.68 617 603 146.3

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