ASTROSAT CZTI

Data Quality Report

Orbit 39920

Creation date: 2024-06-27T22:10:17.493107
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_068T03_9000005508_39920cztM0_level2.fits modeM0/AS1A12_068T03_9000005508_39920cztM0_level2_quad_clean.evt
Size (bytes)367,937,28088,251,840
Size350.9 MB 84.2 MB
Events in quadrant A2,773,977603,220
Events in quadrant B2,427,002624,182
Events in quadrant C2,641,706595,688
Events in quadrant D5,355,618470,495

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116663
B0110222
C0112982
D0197912

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5410100.184843%
B541070.129390%
C541080.147874%
D541090316.691312%

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 7112 5410 5 5 0.07% 0.09%
B 7113 5410 0 0 0.00% 0.00%
C 7113 5411 7 7 0.10% 0.13%
D 7113 5411 892 892 12.54% 16.48%

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 449034 3680.55 592 581 121.8
A 13 248 12507 97.88 592 581 121.8
A 6 10 10349 80.17 592 581 121.8
B 0 230 42574 360.3 594 579 116.6
B 5 172 14974 123.5 594 579 116.6
B 12 111 14384 118.44 594 579 116.6
C 15 214 224041 1635.98 582 586 136.6
C 9 54 114052 830.72 582 586 136.6
C 0 10 20891 148.66 582 586 136.6
D 2 250 1423086 10822.54 529 515 131.4
D 2 249 941170 7156.25 529 515 131.4
D 12 227 816206 6205.56 529 515 131.4

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