ASTROSAT CZTI

Data Quality Report

Orbit 18869

Creation date: 2024-06-27T17:55:53.043962
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/AS1T03_094T01_9000002816_18869cztM0_level2.evt modeM0/AS1T03_094T01_9000002816_18869cztM0_level2_quad_clean.evt
Size (bytes)669,568,32093,490,560
Size638.6 MB 89.2 MB
Events in quadrant A5,550,599588,108
Events in quadrant B3,670,275626,405
Events in quadrant C5,014,713567,525
Events in quadrant D5,583,146575,591

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0209052
B0154732
C0192222
D0214142

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67876789.989686%
B67881622.386565%
C67886349.340012%
D67883465.097230%

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 8507 6789 583 583 6.85% 8.59%
B 8508 6790 47 47 0.55% 0.69%
C 8508 6790 442 442 5.20% 6.51%
D 8508 6790 246 246 2.89% 3.62%

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 6 16 2122278 12957.27 805 787 163.7
A 0 13 304765 1856.58 805 787 163.7
A 13 254 10095 56.85 805 787 163.7
B 7 220 320040 1988.11 829 807 160.6
B 6 36 19450 116.1 829 807 160.6
B 12 111 19091 113.87 829 807 160.6
C 3 233 1883677 10361.57 772 777 181.7
C 14 238 118940 650.25 772 777 181.7
C 13 61 5339 25.1 772 777 181.7
D 1 52 880875 4475.32 791 766 196.7
D 12 1 555425 2820.42 791 766 196.7
D 1 20 473294 2402.79 791 766 196.7

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