ASTROSAT CZTI

Data Quality Report

Orbit 08974

Creation date: 2024-06-27T15:39:38.535723
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/AS1G07_019T01_9000001244_08974cztM0_level2.evt modeM0/AS1G07_019T01_9000001244_08974cztM0_level2_quad_clean.evt
Size (bytes)581,287,68094,072,320
Size554.4 MB 89.7 MB
Events in quadrant A4,320,099636,995
Events in quadrant B4,723,001617,624
Events in quadrant C3,299,820624,892
Events in quadrant D4,841,854536,807

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01706237
B01781016
C01372717
D01827116

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61792644.272536%
B61855058.164915%
C61831282.070192%
D618492514.957956%

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 7431 6191 97 97 1.31% 1.57%
B 7431 6191 365 365 4.91% 5.90%
C 7431 6191 35 35 0.47% 0.57%
D 7431 6191 755 755 10.16% 12.20%

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 5 866373 5494.14 788 771 157.6
A 15 174 261973 1657.9 788 771 157.6
A 5 16 115476 728.05 788 771 157.6
B 0 85 1630697 11250.79 768 752 144.9
B 0 214 37094 250.85 768 752 144.9
B 0 246 16651 109.74 768 752 144.9
C 4 254 342517 1978.43 756 758 172.7
C 13 61 5695 28.58 756 758 172.7
C 8 128 4652 22.54 756 758 172.7
D 13 29 1835565 9994.13 692 674 183.6
D 1 52 281624 1530.26 692 674 183.6
D 7 71 34848 186.14 692 674 183.6

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