ASTROSAT CZTI

Data Quality Report

Orbit 21403

Creation date: 2024-06-27T18:27:25.234205
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/AS1T03_140T01_9000003160_21403cztM0_level2.evt modeM0/AS1T03_140T01_9000003160_21403cztM0_level2_quad_clean.evt
Size (bytes)557,127,36065,664,000
Size531.3 MB 62.6 MB
Events in quadrant A3,208,102399,243
Events in quadrant B3,377,383402,185
Events in quadrant C3,411,637390,677
Events in quadrant D6,423,129330,447

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136672
B0140612
C0143452
D0235982

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6668310.464907%
B6668691.034793%
C6668901.349730%
D666898214.727055%

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 7703 6668 0 0 0.00% 0.00%
B 7703 6668 14 14 0.18% 0.21%
C 7703 6668 3 3 0.04% 0.04%
D 7703 6668 1028 1028 13.35% 15.42%

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 13 254 10570 58.56 831 816 166.6
A 0 226 7254 38.65 831 816 166.6
A 3 137 6705 35.36 831 816 166.6
B 0 228 25952 158.79 830 810 158.3
B 0 230 21480 130.55 830 810 158.3
B 3 64 20622 125.13 830 810 158.3
C 3 233 180876 968.08 796 801 186.0
C 14 238 126785 677.29 796 801 186.0
C 13 61 5554 25.55 796 801 186.0
D 12 235 2897600 15531.27 767 744 186.5
D 1 52 249266 1332.43 767 744 186.5
D 13 153 184820 986.91 767 744 186.5

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