ASTROSAT CZTI

Data Quality Report

Orbit 23930

Creation date: 2024-06-27T19:00:10.926008
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/AS1A07_142T01_9000003540_23930cztM0_level2.evt modeM0/AS1A07_142T01_9000003540_23930cztM0_level2_quad_clean.evt
Size (bytes)580,962,24093,288,960
Size554.0 MB 89.0 MB
Events in quadrant A3,621,050602,059
Events in quadrant B3,786,746606,552
Events in quadrant C4,213,322570,707
Events in quadrant D5,480,013538,935

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153223
B0157452
C0169802
D0211262

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72831021.400522%
B72841552.127952%
C72842193.006590%
D72844416.054366%

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 8853 7285 0 0 0.00% 0.00%
B 8854 7286 5 5 0.06% 0.07%
C 8854 7286 34 34 0.38% 0.47%
D 8854 7286 340 340 3.84% 4.67%

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 2 250 16643 83.52 935 915 188.3
A 13 254 12584 61.97 935 915 188.3
A 3 137 8274 39.08 935 915 188.3
B 0 189 57656 317.46 931 910 178.8
B 15 33 44283 242.64 931 910 178.8
B 12 111 20783 111.18 931 910 178.8
C 10 9 436847 2120.36 881 886 205.6
C 7 247 170522 825.05 881 886 205.6
C 14 238 139519 674.26 881 886 205.6
D 12 218 710488 3333.95 871 845 212.9
D 8 195 684010 3209.55 871 845 212.9
D 1 52 619963 2908.65 871 845 212.9

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