ASTROSAT CZTI

Data Quality Report

Orbit 27230

Creation date: 2024-06-27T19:37:58.669884
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_243T01_9000003918_27230cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27230cztM0_level2_quad_clean.evt
Size (bytes)526,089,60097,850,880
Size501.7 MB 93.3 MB
Events in quadrant A3,382,318636,417
Events in quadrant B3,728,482647,513
Events in quadrant C3,383,688613,186
Events in quadrant D4,972,991588,194

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144180
B0153320
C0144100
D0193730

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6863530.772257%
B68631061.544514%
C6863901.311380%
D68632133.103599%

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 7613 6864 4 4 0.05% 0.06%
B 7613 6864 13 13 0.17% 0.19%
C 7613 6864 1 1 0.01% 0.01%
D 7613 6864 136 136 1.79% 1.98%

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 12 96 19692 109.25 862 843 172.5
A 8 192 15909 87.32 862 843 172.5
A 13 248 15101 82.64 862 843 172.5
B 3 64 222192 1332.26 861 840 166.1
B 5 172 60618 359.79 861 840 166.1
B 0 190 22056 127.69 861 840 166.1
C 14 238 132206 673.72 822 827 195.0
C 15 208 47985 241.83 822 827 195.0
C 2 16 5832 25.67 822 827 195.0
D 1 52 1244291 5996.6 817 800 207.4
D 5 222 255333 1227.46 817 800 207.4
D 2 250 122492 586.85 817 800 207.4

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