ASTROSAT CZTI

Data Quality Report

Orbit 45071

Creation date: 2024-06-27T23:09:37.248923
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/AS1A13_020T01_9000006040_45071cztM0_level2.fits modeM0/AS1A13_020T01_9000006040_45071cztM0_level2_quad_clean.evt
Size (bytes)562,659,840110,730,240
Size536.6 MB 105.6 MB
Events in quadrant A5,803,781730,070
Events in quadrant B3,437,735762,882
Events in quadrant C3,370,365745,468
Events in quadrant D7,678,041631,108

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221141
B0148741
C0149391
D0277563

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69373595.175148%
B69382123.055636%
C69381692.435860%
D693787812.656768%

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 7607 6938 65 65 0.85% 0.94%
B 7608 6939 9 9 0.12% 0.13%
C 7608 6939 36 36 0.47% 0.52%
D 7607 6938 684 684 8.99% 9.86%

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 10 83 2434609 14522.52 803 786 167.6
A 13 248 221721 1318.31 803 786 167.6
A 10 248 25211 145.74 803 786 167.6
B 0 186 68537 420.68 807 782 161.1
B 0 183 54946 336.3 807 782 161.1
B 5 255 40645 247.51 807 782 161.1
C 14 254 179279 938.5 801 807 190.2
C 15 208 29650 151.67 801 807 190.2
C 3 233 19551 98.57 801 807 190.2
D 11 241 2604279 13173.88 775 751 197.6
D 13 249 419017 2116.43 775 751 197.6
D 5 235 417068 2106.57 775 751 197.6

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