ASTROSAT CZTI

Data Quality Report

Orbit 00912

Creation date: 2024-06-27T14:04:37.033978
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/AS1P01_161T02_9000000184_00912cztM0_level2.evt modeM0/AS1P01_161T02_9000000184_00912cztM0_level2_quad_clean.evt
Size (bytes)1,019,312,64070,974,720
Size972.1 MB 67.7 MB
Events in quadrant A6,879,182450,919
Events in quadrant B7,590,319444,868
Events in quadrant C7,031,017440,622
Events in quadrant D8,981,329402,872

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246080
B0267120
C0250510
D0309520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5863260.443459%
B5863510.869862%
C5864530.903820%
D586460110.248977%

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 7133 5864 199 199 2.79% 3.39%
B 7133 5864 375 375 5.26% 6.39%
C 7134 5865 238 238 3.34% 4.06%
D 7134 5865 1284 1284 18.00% 21.89%

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 15 127 112317 264.09 1761 1773 418.6
A 15 233 11752 23.84 1761 1773 418.6
A 11 79 5565 9.06 1761 1773 418.6
B 3 0 354659 836.87 1833 1841 421.6
B 7 221 73274 169.44 1833 1841 421.6
B 5 249 64833 149.41 1833 1841 421.6
C 12 254 77867 160.47 1722 1783 474.1
C 9 52 77741 160.21 1722 1783 474.1
C 15 241 53331 108.72 1722 1783 474.1
D 12 188 2520037 5050.6 1626 1681 498.6
D 1 4 177700 353.01 1626 1681 498.6
D 10 102 54892 106.72 1626 1681 498.6

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