ASTROSAT CZTI

Data Quality Report

Orbit 39054

Creation date: 2024-06-27T21:59:49.334089
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_077T06_9000005430_39054cztM0_level2.fits modeM0/AS1A12_077T06_9000005430_39054cztM0_level2_quad_clean.evt
Size (bytes)474,134,40099,270,720
Size452.2 MB 94.7 MB
Events in quadrant A7,131,716654,652
Events in quadrant B2,713,402711,864
Events in quadrant C2,943,024669,038
Events in quadrant D4,340,970589,820

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250422
B0112611
C0118291
D0164711

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A544164811.909575%
B544190.165411%
C5441100.183790%
D54424137.589122%

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 7384 5442 566 566 7.67% 10.40%
B 7384 5442 5 5 0.07% 0.09%
C 7384 5442 7 7 0.09% 0.13%
D 7385 5443 362 362 4.90% 6.65%

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 4172055 32201.06 647 634 129.5
A 10 83 427202 3292.87 647 634 129.5
A 9 143 19589 146.32 647 634 129.5
B 0 230 56381 446.21 655 638 124.9
B 0 190 22684 176.47 655 638 124.9
B 15 85 20012 155.08 655 638 124.9
C 15 214 228114 1538.45 643 647 147.9
C 15 208 90809 609.8 643 647 147.9
C 15 159 37136 246.79 643 647 147.9
D 2 249 881594 5699.96 631 613 154.6
D 1 47 412543 2665.2 631 613 154.6
D 12 233 275568 1778.96 631 613 154.6

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