ASTROSAT CZTI

Data Quality Report

Orbit 30444

Creation date: 2024-06-27T20:15:20.068427
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/AS1A10_121T02_9000004378_30444cztM0_level2.evt modeM0/AS1A10_121T02_9000004378_30444cztM0_level2_quad_clean.evt
Size (bytes)637,943,040100,825,920
Size608.4 MB 96.2 MB
Events in quadrant A3,381,437685,010
Events in quadrant B5,423,717689,378
Events in quadrant C3,561,629672,464
Events in quadrant D6,494,198533,447

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144261
B0208561
C0148701
D0239271

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6778560.826202%
B67781422.095013%
C67781852.729419%
D6778157023.163175%

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 7477 6777 3 3 0.04% 0.04%
B 7477 6777 12 12 0.16% 0.18%
C 7477 6777 33 33 0.44% 0.49%
D 7477 6777 1296 1296 17.33% 19.12%

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 2 64828 380.59 837 822 168.2
A 0 13 54239 317.63 837 822 168.2
A 14 239 23561 135.21 837 822 168.2
B 6 159 1966956 12441.54 832 811 158.0
B 15 33 90017 564.49 832 811 158.0
B 0 229 58197 363.13 832 811 158.0
C 14 238 130930 686.18 809 816 189.6
C 0 10 87500 457.14 809 816 189.6
C 3 233 85644 447.36 809 816 189.6
D 13 104 3420833 18353.12 696 683 186.4
D 8 195 148940 795.57 696 683 186.4
D 2 250 125169 668.01 696 683 186.4

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