ASTROSAT CZTI

Data Quality Report

Orbit 39557

Creation date: 2024-06-27T22:06:06.690198
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/AS1A12_018T01_9000005488_39557cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39557cztM0_level2_quad_clean.evt
Size (bytes)529,574,40087,396,480
Size505.0 MB 83.3 MB
Events in quadrant A6,422,872551,075
Events in quadrant B2,473,183641,728
Events in quadrant C4,149,085578,245
Events in quadrant D6,116,118476,644

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230113
B0114892
C0160612
D0220532

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A569690315.853230%
B569690.158006%
C56962544.459270%
D5696101217.766854%

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 7280 5697 747 747 10.26% 13.11%
B 7280 5697 1 1 0.01% 0.02%
C 7280 5697 234 234 3.21% 4.11%
D 7280 5697 898 898 12.34% 15.76%

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 15 222 3676612 30566.75 590 578 120.3
A 10 83 421043 3496.23 590 578 120.3
A 13 248 11847 93.7 590 578 120.3
B 5 255 32314 268.65 610 594 118.1
B 0 214 18913 155.15 610 594 118.1
B 12 111 14880 120.99 610 594 118.1
C 9 187 1137309 8155.64 589 592 139.4
C 15 208 464854 3330.95 589 592 139.4
C 15 214 236069 1689.48 589 592 139.4
D 12 227 3240287 23941.75 546 529 135.3
D 1 52 359344 2651.64 546 529 135.3
D 13 249 131803 970.11 546 529 135.3

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