ASTROSAT CZTI

Data Quality Report

Orbit 38636

Creation date: 2024-06-27T21:54:26.469588
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_061T03_9000005390_38636cztM0_level2.fits modeM0/AS1A12_061T03_9000005390_38636cztM0_level2_quad_clean.evt
Size (bytes)336,767,04092,787,840
Size321.2 MB 88.5 MB
Events in quadrant A2,812,984635,877
Events in quadrant B2,659,239651,293
Events in quadrant C3,021,240616,873
Events in quadrant D3,591,273562,317

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112333
B0108552
C0117132
D0139822

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4897240.490096%
B4897541.102716%
C48971222.491321%
D48971913.900347%

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 7020 4898 23 23 0.33% 0.47%
B 7020 4898 21 21 0.30% 0.43%
C 7020 4898 112 112 1.60% 2.29%
D 7020 4898 179 179 2.55% 3.65%

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 10 83 394171 3262.78 602 592 120.6
A 13 248 45410 371.54 602 592 120.6
A 13 6 19498 156.73 602 592 120.6
B 4 171 239991 2132.18 596 581 112.3
B 0 155 29606 258.5 596 581 112.3
B 15 85 18095 155.98 596 581 112.3
C 14 254 449878 3300.29 588 594 136.1
C 15 214 198243 1451.86 588 594 136.1
C 0 10 30762 221.6 588 594 136.1
D 5 222 437369 3053.73 588 574 143.0
D 13 249 249350 1739.25 588 574 143.0
D 1 47 140603 978.97 588 574 143.0

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