ASTROSAT CZTI

Data Quality Report

Orbit 41749

Creation date: 2024-06-27T22:32:23.255777
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_077T11_9000005696_41749cztM0_level2.fits modeM0/AS1A12_077T11_9000005696_41749cztM0_level2_quad_clean.evt
Size (bytes)346,711,68091,396,800
Size330.7 MB 87.2 MB
Events in quadrant A2,969,899637,688
Events in quadrant B2,513,388653,746
Events in quadrant C3,536,172571,535
Events in quadrant D3,421,813551,346

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0350
C0350
D0350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118412
B0104182
C0136362
D0134402

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5046170.336901%
B5046100.198177%
C50462855.648038%
D50461633.230281%

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 7080 5048 4 4 0.06% 0.08%
B 7079 5046 3 3 0.04% 0.06%
C 7079 5046 277 277 3.91% 5.49%
D 7079 5046 167 167 2.36% 3.31%

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 506636 4083.54 614 604 123.9
A 2 79 48214 384.2 614 604 123.9
A 13 248 14871 115.13 614 604 123.9
B 0 245 84090 715.17 604 591 116.8
B 5 255 22445 187.18 604 591 116.8
B 0 183 20200 167.95 604 591 116.8
C 0 10 1123288 8503.03 563 567 132.0
C 15 214 216630 1636.37 563 567 132.0
C 13 61 3612 23.06 563 567 132.0
D 12 79 659966 4579.14 587 572 144.0
D 2 120 199404 1380.78 587 572 144.0
D 2 249 188015 1301.69 587 572 144.0

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