ASTROSAT CZTI

Data Quality Report

Orbit 01001

Creation date: 2024-06-27T14:05:58.388568
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_998T02_9000000190_01001cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_01001cztM0_level2_quad_clean.evt
Size (bytes)1,032,220,800109,621,440
Size984.4 MB 104.5 MB
Events in quadrant A7,364,650729,541
Events in quadrant B7,936,688734,804
Events in quadrant C7,694,604713,087
Events in quadrant D7,841,311696,975

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0264546
B0281461
C0273931
D0278431

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6386110.172252%
B6387560.876781%
C6387300.469704%
D6387490.767183%

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 7181 6387 209 209 2.91% 3.27%
B 7182 6388 325 325 4.53% 5.09%
C 7182 6388 232 232 3.23% 3.63%
D 7182 6388 407 407 5.67% 6.37%

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 0 253 29208 59.58 1908 1917 458.1
A 12 189 11590 21.12 1908 1917 458.1
A 11 79 9451 16.45 1908 1917 458.1
B 0 182 95746 199.54 2003 2007 469.8
B 7 221 59501 122.38 2003 2007 469.8
B 15 22 29497 58.52 2003 2007 469.8
C 15 241 325909 623.36 1866 1934 519.7
C 3 79 36748 66.99 1866 1934 519.7
C 3 111 30810 55.56 1866 1934 519.7
D 12 22 481166 856.79 1809 1878 559.4
D 1 4 396884 706.13 1809 1878 559.4
D 1 83 85031 148.65 1809 1878 559.4

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