ASTROSAT CZTI

Data Quality Report

Orbit 16961

Creation date: 2024-06-27T17:30:05.044129
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/AS1A05_188T01_9000002520_16961cztM0_level2.evt modeM0/AS1A05_188T01_9000002520_16961cztM0_level2_quad_clean.evt
Size (bytes)498,286,080104,808,960
Size475.2 MB 100.0 MB
Events in quadrant A3,316,799672,116
Events in quadrant B3,559,941697,525
Events in quadrant C3,518,821670,295
Events in quadrant D4,223,132650,160

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143982
B0150972
C0147052
D0173002

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6946430.619061%
B6947781.122787%
C6947761.093997%
D69474476.434432%

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 9152 6949 3 3 0.03% 0.04%
B 9153 6950 4 4 0.04% 0.06%
C 9153 6950 0 0 0.00% 0.00%
D 9153 6950 402 402 4.39% 5.78%

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 9 143 45082 260.09 846 827 170.2
A 12 189 18745 105.31 846 827 170.2
A 0 226 7397 38.61 846 827 170.2
B 15 35 60399 363.93 861 840 163.7
B 0 197 30626 182.0 861 840 163.7
B 4 216 30243 179.66 861 840 163.7
C 3 233 137237 698.24 834 841 195.3
C 14 238 128688 654.48 834 841 195.3
C 13 61 5869 25.74 834 841 195.3
D 15 0 897192 4595.38 802 781 195.1
D 1 52 149674 763.29 802 781 195.1
D 7 38 60313 305.19 802 781 195.1

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