ASTROSAT CZTI

Data Quality Report

Orbit 26324

Creation date: 2024-06-27T19:27:28.833705
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_008T02_9000003796_26324cztM0_level2.evt modeM0/AS1A09_008T02_9000003796_26324cztM0_level2_quad_clean.evt
Size (bytes)659,260,80070,989,120
Size628.7 MB 67.7 MB
Events in quadrant A2,805,419467,520
Events in quadrant B2,832,944473,002
Events in quadrant C9,227,558350,999
Events in quadrant D4,695,462440,389

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122680
B0122820
C0314670
D0179730

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5971470.787138%
B5970580.971524%
C5970287148.090452%
D59704918.224456%

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 6876 5972 0 0 0.00% 0.00%
B 6875 5971 1 1 0.01% 0.02%
C 6875 5971 1989 1989 28.93% 33.31%
D 6875 5971 337 337 4.90% 5.64%

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 9008 56.94 725 708 145.8
A 3 137 6804 41.82 725 708 145.8
A 0 226 6329 38.56 725 708 145.8
B 12 111 16409 115.07 718 700 136.5
B 11 111 14750 102.92 718 700 136.5
B 14 111 13135 91.09 718 700 136.5
C 4 254 6628873 50253.56 561 564 131.9
C 3 233 262110 1982.95 561 564 131.9
C 14 238 87238 657.13 561 564 131.9
D 12 233 1157739 7064.27 678 658 163.8
D 1 52 746563 4553.93 678 658 163.8
D 11 176 212651 1294.27 678 658 163.8

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