ASTROSAT CZTI

Data Quality Report

Orbit 19744

Creation date: 2024-06-27T18:06:25.787065
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/AS1C04_001T01_9000002948_19744cztM0_level2.evt modeM0/AS1C04_001T01_9000002948_19744cztM0_level2_quad_clean.evt
Size (bytes)465,935,040128,373,120
Size444.4 MB 122.4 MB
Events in quadrant A3,052,482867,506
Events in quadrant B3,273,550895,509
Events in quadrant C3,593,302858,567
Events in quadrant D3,752,661815,924

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133753
B0138882
C0147542
D0156942

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6464190.293936%
B6464500.773515%
C6464741.144802%
D64641302.011139%

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 7794 6465 0 0 0.00% 0.00%
B 7794 6465 14 14 0.18% 0.22%
C 7794 6465 0 0 0.00% 0.00%
D 7794 6465 84 84 1.08% 1.30%

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 11 29 30154 188.59 783 767 155.8
A 0 226 6832 38.92 783 767 155.8
A 13 254 6436 36.38 783 767 155.8
B 7 220 108984 737.32 796 778 146.8
B 12 111 16770 108.97 796 778 146.8
B 0 198 15148 97.92 796 778 146.8
C 3 233 453957 2593.71 762 770 174.7
C 14 238 121788 692.62 762 770 174.7
C 7 247 36081 202.09 762 770 174.7
D 1 52 678948 3761.36 750 729 180.3
D 12 225 97476 536.55 750 729 180.3
D 7 238 54864 300.23 750 729 180.3

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