ASTROSAT CZTI

Data Quality Report

Orbit 15615

Creation date: 2024-06-27T17:11:09.308225
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_031T01_9000002314_15615cztM0_level2.evt modeM0/AS1G08_031T01_9000002314_15615cztM0_level2_quad_clean.evt
Size (bytes)593,688,960102,024,000
Size566.2 MB 97.3 MB
Events in quadrant A4,288,524628,653
Events in quadrant B4,539,367637,875
Events in quadrant C4,283,296617,509
Events in quadrant D4,284,517607,561

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180483
B0187902
C0178482
D0182062

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8621540.626377%
B86211021.183157%
C8621850.985965%
D8621660.765572%

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 10837 8623 2 2 0.02% 0.02%
B 10837 8622 15 15 0.14% 0.17%
C 10837 8622 0 0 0.00% 0.00%
D 10837 8622 30 30 0.28% 0.35%

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 0 253 82648 372.64 1087 1062 218.9
A 15 157 11170 46.17 1087 1062 218.9
A 0 226 9677 39.35 1087 1062 218.9
B 4 251 180794 865.53 1082 1053 207.7
B 0 189 47841 225.3 1082 1053 207.7
B 0 230 35400 165.4 1082 1053 207.7
C 14 238 159793 645.27 1049 1056 246.0
C 7 247 24093 93.65 1049 1056 246.0
C 13 61 7488 26.15 1049 1056 246.0
D 12 110 127321 487.94 1065 1035 258.8
D 10 70 117708 450.8 1065 1035 258.8
D 2 234 35335 132.53 1065 1035 258.8

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