ASTROSAT CZTI

Data Quality Report

Orbit 01113

Creation date: 2024-06-27T14:07:44.619581
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_997T01_9000000214_01113cztM0_level2.evt modeM0/AS1P01_997T01_9000000214_01113cztM0_level2_quad_clean.evt
Size (bytes)957,522,24098,023,680
Size913.2 MB 93.5 MB
Events in quadrant A7,273,317650,205
Events in quadrant B7,488,792654,213
Events in quadrant C7,217,732619,226
Events in quadrant D6,609,909615,297

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0259712
B0265771
C0258051
D0239821

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6143240.390689%
B6143140.227902%
C6143250.406967%
D6143220.358131%

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 7338 6143 167 167 2.28% 2.72%
B 7338 6144 171 171 2.33% 2.78%
C 7338 6144 143 143 1.95% 2.33%
D 7338 6144 140 140 1.91% 2.28%

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 4 32 53754 115.59 1877 1889 448.7
A 0 253 15420 30.16 1877 1889 448.7
A 11 79 7923 13.45 1877 1889 448.7
B 4 187 19640 38.97 1945 1959 453.7
B 0 190 17289 33.79 1945 1959 453.7
B 15 22 16756 32.62 1945 1959 453.7
C 15 241 319216 657.81 1729 1783 482.6
C 10 207 78700 159.39 1729 1783 482.6
C 10 19 32831 64.34 1729 1783 482.6
D 2 216 66641 132.76 1727 1763 488.7
D 7 67 51282 101.33 1727 1763 488.7
D 10 125 19899 37.11 1727 1763 488.7

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