ASTROSAT CZTI

Data Quality Report

Orbit 25314

Creation date: 2024-06-27T19:16:13.504728
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/AS1A09_022T01_9000003702_25314cztM0_level2.evt modeM0/AS1A09_022T01_9000003702_25314cztM0_level2_quad_clean.evt
Size (bytes)379,517,76054,789,120
Size361.9 MB 52.3 MB
Events in quadrant A2,562,413358,620
Events in quadrant B2,102,234363,512
Events in quadrant C2,111,837339,922
Events in quadrant D4,434,473303,468

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102750
B087880
C087720
D0159330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4156130.312801%
B4156140.336862%
C4156290.697786%
D415649511.910491%

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 4156 4156 0 0 0.00% 0.00%
B 4156 4156 0 0 0.00% 0.00%
C 4156 4156 1 1 0.02% 0.02%
D 4156 4156 457 457 11.00% 11.00%

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 15 173 494970 4659.35 536 528 106.1
A 13 254 6594 57.16 536 528 106.1
A 0 226 4627 38.63 536 528 106.1
B 0 190 34070 339.57 525 514 98.8
B 12 111 11382 109.98 525 514 98.8
B 11 111 10254 98.56 525 514 98.8
C 14 238 82918 709.61 501 504 116.1
C 3 233 53541 456.67 501 504 116.1
C 9 54 18450 154.52 501 504 116.1
D 1 52 1931913 16029.6 495 481 120.5
D 12 235 241895 2003.58 495 481 120.5
D 12 233 157901 1306.48 495 481 120.5

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