ASTROSAT CZTI

Data Quality Report

Orbit 26472

Creation date: 2024-06-27T19:29:26.949425
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_104T02_9000003826_26472cztM0_level2.evt modeM0/AS1A09_104T02_9000003826_26472cztM0_level2_quad_clean.evt
Size (bytes)477,766,080111,360,960
Size455.6 MB 106.2 MB
Events in quadrant A3,191,542764,172
Events in quadrant B3,215,129767,952
Events in quadrant C3,473,105714,847
Events in quadrant D4,177,635702,030

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134810
B0134310
C0142870
D0164550

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6065641.055235%
B6066671.104517%
C60651171.929101%
D60653355.523495%

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 7270 6065 0 0 0.00% 0.00%
B 7271 6066 1 1 0.01% 0.02%
C 7270 6065 11 11 0.15% 0.18%
D 7270 6065 260 260 3.58% 4.29%

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 9453 52.59 827 811 164.3
A 0 226 7129 38.44 827 811 164.3
A 3 137 7009 37.71 827 811 164.3
B 0 190 23131 146.07 809 791 152.9
B 10 249 19681 123.51 809 791 152.9
B 12 111 17816 111.31 809 791 152.9
C 3 233 161616 898.22 773 780 179.1
C 14 238 125860 698.54 773 780 179.1
C 4 254 117592 652.36 773 780 179.1
D 7 80 802285 4308.8 779 762 186.0
D 12 233 346732 1859.85 779 762 186.0
D 11 176 29154 152.63 779 762 186.0

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