ASTROSAT CZTI

Data Quality Report

Orbit 21902

Creation date: 2024-06-27T18:33:42.742128
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/AS1A07_010T06_9000003238_21902cztM0_level2.evt modeM0/AS1A07_010T06_9000003238_21902cztM0_level2_quad_clean.evt
Size (bytes)641,851,200113,664,960
Size612.1 MB 108.4 MB
Events in quadrant A3,318,109781,171
Events in quadrant B3,327,992801,281
Events in quadrant C3,586,922732,914
Events in quadrant D8,763,916671,901

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140992
B0140442
C0148352
D0305302

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6523741.134447%
B6523600.919822%
C65232614.001226%
D6523187728.775103%

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 7618 6524 50 50 0.66% 0.77%
B 7618 6524 17 17 0.22% 0.26%
C 7618 6524 166 166 2.18% 2.54%
D 7618 6524 1823 1823 23.93% 27.94%

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 5 16 251248 1579.94 795 779 158.5
A 13 254 12091 71.35 795 779 158.5
A 0 226 6723 37.49 795 779 158.5
B 3 64 98322 655.72 803 784 148.8
B 4 171 19189 123.73 803 784 148.8
B 0 197 17343 111.32 803 784 148.8
C 10 22 519552 2971.85 752 756 174.6
C 14 238 119143 678.16 752 756 174.6
C 0 10 12127 65.14 752 756 174.6
D 7 238 5957784 35263.99 700 681 168.9
D 1 52 45998 268.26 700 681 168.9
D 2 136 39472 229.63 700 681 168.9

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