ASTROSAT CZTI

Data Quality Report

Orbit 41650

Creation date: 2024-06-27T22:31:09.929008
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/AS1T05_116T01_9000005682_41650cztM0_level2.fits modeM0/AS1T05_116T01_9000005682_41650cztM0_level2_quad_clean.evt
Size (bytes)301,648,32084,954,240
Size287.7 MB 81.0 MB
Events in quadrant A2,632,664576,822
Events in quadrant B2,279,875587,194
Events in quadrant C2,980,259541,372
Events in quadrant D2,889,497522,085

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108832
B0102242
C0120012
D0120616

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0320
C0320
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4920140.284553%
B4920240.487805%
C49202765.609756%
D49191032.093922%

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 7043 4921 3 3 0.04% 0.06%
B 7043 4921 10 10 0.14% 0.20%
C 7043 4921 264 264 3.75% 5.36%
D 7042 4920 95 95 1.35% 1.93%

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 520859 4715.86 540 530 110.3
A 2 79 12846 111.62 540 530 110.3
A 13 254 7194 60.4 540 530 110.3
B 4 81 70329 677.17 538 524 103.1
B 0 190 51848 497.89 538 524 103.1
B 5 255 39322 376.38 538 524 103.1
C 0 10 578060 4831.8 515 519 119.5
C 14 254 197474 1647.76 515 519 119.5
C 15 214 193754 1616.64 515 519 119.5
D 13 249 448215 3412.56 530 516 131.2
D 5 222 188312 1431.46 530 516 131.2
D 10 34 54994 415.25 530 516 131.2

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