ASTROSAT CZTI

Data Quality Report

Orbit 12170

Creation date: 2024-06-27T16:23:20.213815
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/AS1G08_065T01_9000001796_12170cztM0_level2.evt modeM0/AS1G08_065T01_9000001796_12170cztM0_level2_quad_clean.evt
Size (bytes)469,555,20079,505,280
Size447.8 MB 75.8 MB
Events in quadrant A3,283,642504,717
Events in quadrant B4,027,379499,046
Events in quadrant C3,060,994494,362
Events in quadrant D3,429,584478,622

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136672
B0159591
C0132071
D0141131

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6175781.263158%
B61752624.242915%
C6175681.101215%
D61751061.716599%

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 7331 6176 4 4 0.05% 0.06%
B 7331 6176 124 124 1.69% 2.01%
C 7331 6177 15 15 0.20% 0.24%
D 7331 6177 70 70 0.95% 1.13%

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 8 15 130435 835.17 763 748 155.3
A 13 248 74102 472.39 763 748 155.3
A 1 162 40151 253.75 763 748 155.3
B 4 239 779417 5539.98 743 725 140.6
B 11 51 125419 887.13 743 725 140.6
B 0 214 107768 761.55 743 725 140.6
C 15 208 212758 1270.35 725 728 166.9
C 14 234 15109 86.16 725 728 166.9
C 13 61 5415 28.08 725 728 166.9
D 1 52 353191 2053.45 731 713 171.7
D 2 33 56375 324.27 731 713 171.7
D 8 195 54119 311.13 731 713 171.7

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