ASTROSAT CZTI

Data Quality Report

Orbit 40455

Creation date: 2024-06-27T22:16:19.289967
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_022T01_9000005540_40455cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40455cztM0_level2_quad_clean.evt
Size (bytes)335,401,92089,619,840
Size319.9 MB 85.5 MB
Events in quadrant A2,854,310606,635
Events in quadrant B2,475,823623,655
Events in quadrant C2,629,871598,519
Events in quadrant D4,012,733487,650

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120113
B0114762
C0115992
D0158532

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A567360.105764%
B567350.088137%
C567390.158646%
D567374613.150009%

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 7256 5674 4 4 0.06% 0.07%
B 7256 5674 0 0 0.00% 0.00%
C 7256 5674 3 3 0.04% 0.05%
D 7256 5674 324 324 4.47% 5.71%

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 501696 4022.88 601 588 124.6
A 2 79 9935 75.04 601 588 124.6
A 13 6 8620 64.48 601 588 124.6
B 3 112 47579 405.01 598 581 116.0
B 0 230 34789 294.79 598 581 116.0
B 4 171 16783 139.62 598 581 116.0
C 15 214 246085 1789.46 586 589 137.2
C 14 254 84977 615.12 586 589 137.2
C 3 233 6765 45.02 586 589 137.2
D 2 250 893586 6605.21 546 531 135.2
D 12 227 374531 2766.18 546 531 135.2
D 12 128 354258 2616.23 546 531 135.2

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