ASTROSAT CZTI

Data Quality Report

Orbit 41680

Creation date: 2024-06-27T22:31:26.821956
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_044T21_9000005688_41680cztM0_level2.fits modeM0/AS1A12_044T21_9000005688_41680cztM0_level2_quad_clean.evt
Size (bytes)286,395,84083,606,400
Size273.1 MB 79.7 MB
Events in quadrant A2,678,689561,214
Events in quadrant B2,321,830573,289
Events in quadrant C2,549,318541,305
Events in quadrant D2,658,914502,664

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110852
B0103902
C0108632
D0115422

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5032150.298092%
B5032300.596184%
C5032851.689189%
D5032871.728935%

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 6975 5033 9 9 0.13% 0.18%
B 6975 5033 18 18 0.26% 0.36%
C 6975 5033 80 80 1.15% 1.59%
D 6975 5033 91 91 1.30% 1.81%

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 516499 4563.48 546 535 113.1
A 2 79 41677 363.88 546 535 113.1
A 3 137 6170 49.84 546 535 113.1
B 0 245 71750 666.45 545 530 106.9
B 5 255 69950 649.6 545 530 106.9
B 0 190 20868 190.31 545 530 106.9
C 0 10 269231 2146.56 532 536 125.2
C 15 214 205318 1635.97 532 536 125.2
C 13 61 3464 23.39 532 536 125.2
D 13 249 386129 2942.41 531 516 131.1
D 2 249 68263 516.94 531 516 131.1
D 12 6 49912 376.91 531 516 131.1

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