ASTROSAT CZTI

Data Quality Report

Orbit 27066

Creation date: 2024-06-27T19:36:05.141724
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_120T02_9000003904_27066cztM0_level2.evt modeM0/AS1A09_120T02_9000003904_27066cztM0_level2_quad_clean.evt
Size (bytes)637,513,92084,640,320
Size608.0 MB 80.7 MB
Events in quadrant A4,008,696545,820
Events in quadrant B7,713,495517,557
Events in quadrant C3,528,647538,838
Events in quadrant D3,634,558525,440

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161020
B0272050
C0144420
D0148360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62361111.779987%
B6237183629.437229%
C62371161.859869%
D6237831.330768%

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 7476 6237 29 29 0.39% 0.46%
B 7477 6238 1534 1534 20.52% 24.59%
C 7477 6238 2 2 0.03% 0.03%
D 7477 6238 34 34 0.45% 0.55%

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 14 235 433911 2484.07 878 865 174.3
A 6 16 180133 1028.33 878 865 174.3
A 13 254 10753 56.72 878 865 174.3
B 0 189 4645649 31832.19 780 764 145.9
B 12 111 16226 105.96 780 764 145.9
B 11 111 14914 96.97 780 764 145.9
C 14 238 140138 693.65 863 873 200.8
C 15 208 22098 105.72 863 873 200.8
C 13 61 6154 26.3 863 873 200.8
D 2 250 169874 833.56 865 848 202.8
D 1 52 107453 525.73 865 848 202.8
D 8 195 43528 210.48 865 848 202.8

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