ASTROSAT CZTI

Data Quality Report

Orbit 04321

Creation date: 2024-06-27T14:40:21.223396
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/AS1G05_219T01_9000000540_04321cztM0_level2.evt modeM0/AS1G05_219T01_9000000540_04321cztM0_level2_quad_clean.evt
Size (bytes)1,448,184,960114,027,840
Size1.3 GB 108.7 MB
Events in quadrant A6,170,841746,173
Events in quadrant B24,598,825352,493
Events in quadrant C5,848,236730,504
Events in quadrant D6,350,758710,791

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02724
B02722
C02722
D02724

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027729104
B082779879
C027189131
D028938166

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A132061751.325155%
B13128811861.837294%
C13192740.560946%
D13187870.659741%

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 14870 13254 56 56 0.38% 0.42%
B 14869 13160 7742 7742 52.07% 58.83%
C 14870 13250 6 6 0.04% 0.05%
D 14870 13253 42 42 0.28% 0.32%

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 50 133535 428.42 1511 1474 308.2
A 15 234 112781 361.09 1511 1474 308.2
A 8 15 76790 244.33 1511 1474 308.2
B 3 0 20481996 105010.31 1011 986 195.0
B 4 48 62928 317.59 1011 986 195.0
B 15 204 34358 171.1 1011 986 195.0
C 9 247 56863 161.53 1462 1467 342.9
C 10 65 35220 98.42 1462 1467 342.9
C 8 128 15834 41.89 1462 1467 342.9
D 2 63 191508 539.69 1453 1410 352.2
D 4 95 187980 529.67 1453 1410 352.2
D 2 136 89063 248.85 1453 1410 352.2

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