ASTROSAT CZTI

Data Quality Report

Orbit 42941

Creation date: 2024-06-27T22:46:04.343571
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/AS1A09_036T05_9000005832_42941cztM0_level2.fits modeM0/AS1A09_036T05_9000005832_42941cztM0_level2_quad_clean.evt
Size (bytes)329,454,72083,733,120
Size314.2 MB 79.9 MB
Events in quadrant A2,975,594559,465
Events in quadrant B3,037,084560,682
Events in quadrant C2,354,811555,147
Events in quadrant D3,424,328497,693

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120592
B0128902
C0104742
D0139562

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0310
C0310
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5176901.738794%
B51762053.960587%
C517630.057960%
D51762494.810665%

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 6968 5176 48 48 0.69% 0.93%
B 6969 5177 156 156 2.24% 3.01%
C 6968 5176 0 0 0.00% 0.00%
D 6968 5176 257 257 3.69% 4.97%

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 10 83 554779 4972.46 540 529 111.5
A 15 237 241170 2158.91 540 529 111.5
A 15 222 48389 429.38 540 529 111.5
B 4 81 823832 7949.71 537 521 103.6
B 0 229 56606 541.54 537 521 103.6
B 5 172 27047 256.13 537 521 103.6
C 15 214 224882 1793.89 535 538 125.1
C 14 254 33796 265.94 535 538 125.1
C 12 249 6320 46.23 535 538 125.1
D 1 52 696755 5437.54 521 505 128.0
D 2 249 303991 2370.15 521 505 128.0
D 12 233 97240 755.48 521 505 128.0

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