ASTROSAT CZTI

Data Quality Report

Orbit 08779

Creation date: 2024-06-27T15:37:06.402544
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/AS1G07_010T02_9000001222_08779cztM0_level2.evt modeM0/AS1G07_010T02_9000001222_08779cztM0_level2_quad_clean.evt
Size (bytes)204,713,28023,304,960
Size195.2 MB 22.2 MB
Events in quadrant A1,364,119130,525
Events in quadrant B1,255,738134,153
Events in quadrant C1,191,838134,449
Events in quadrant D2,217,455127,682

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A055326
B052479
C0518713
D0823724

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A071
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A24861074.304103%
B2484963.864734%
C2483632.537253%
D248442717.190016%

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 3173 2488 9 9 0.28% 0.36%
B 3173 2487 1 1 0.03% 0.04%
C 3173 2487 0 0 0.00% 0.00%
D 3173 2485 350 350 11.03% 14.08%

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 8 5 115200 1731.03 311 303 66.4
A 15 223 22572 335.5 311 303 66.4
A 15 239 11000 161.16 311 303 66.4
B 10 16 20979 322.77 314 305 64.1
B 4 173 10461 158.56 314 305 64.1
B 12 111 7324 109.58 314 305 64.1
C 13 61 2286 26.85 304 305 73.8
C 9 68 2095 24.26 304 305 73.8
C 5 128 1178 11.83 304 305 73.8
D 2 16 1030539 14710.46 272 265 70.0
D 1 52 47048 667.98 272 265 70.0
D 2 14 45656 648.1 272 265 70.0

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