ASTROSAT CZTI

Data Quality Report

Orbit 38108

Creation date: 2024-06-27T21:48:29.173491
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/AS1A11_047T09_9000005362_38108cztM0_level2.fits modeM0/AS1A11_047T09_9000005362_38108cztM0_level2_quad_clean.evt
Size (bytes)282,055,68061,502,400
Size269.0 MB 58.7 MB
Events in quadrant A2,406,115416,061
Events in quadrant B1,965,489421,501
Events in quadrant C2,050,572395,612
Events in quadrant D3,728,182365,216

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0945725
B081855
C0829215
D01369044

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3722381.020956%
B3731391.045296%
C3726671.798175%
D37211463.923676%

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 5047 3731 24 24 0.48% 0.64%
B 5047 3734 27 27 0.53% 0.72%
C 5047 3732 55 55 1.09% 1.47%
D 5047 3730 148 148 2.93% 3.97%

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 12 16 324440 3642.24 426 416 89.0
A 10 83 241862 2714.01 426 416 89.0
A 12 189 122667 1374.18 426 416 89.0
B 0 229 123052 1469.59 423 412 83.5
B 5 172 105468 1258.88 423 412 83.5
B 0 189 24970 294.28 423 412 83.5
C 1 23 243246 2481.67 410 413 97.9
C 15 214 153409 1563.57 410 413 97.9
C 3 233 17966 179.39 410 413 97.9
D 12 235 1243997 12178.87 411 399 102.1
D 1 20 429421 4201.52 411 399 102.1
D 1 52 124779 1218.09 411 399 102.1

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