ASTROSAT CZTI

Data Quality Report

Orbit 43764

Creation date: 2024-06-27T22:55:29.740269
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/AS1A13_026T01_9000005904_43764cztM0_level2.fits modeM0/AS1A13_026T01_9000005904_43764cztM0_level2_quad_clean.evt
Size (bytes)570,821,760114,307,200
Size544.4 MB 109.0 MB
Events in quadrant A5,087,525804,248
Events in quadrant B4,917,792769,974
Events in quadrant C4,225,530785,284
Events in quadrant D6,403,585655,704

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200292
B0189232
C0165282
D0234362

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63922403.754693%
B639267310.528786%
C63932704.223369%
D639388113.780698%

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 7597 6393 57 57 0.75% 0.89%
B 7597 6392 399 399 5.25% 6.24%
C 7598 6394 189 189 2.49% 2.96%
D 7598 6394 543 543 7.15% 8.49%

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 1043688 6221.26 808 793 167.6
A 14 63 256435 1525.0 808 793 167.6
A 13 248 199815 1187.24 808 793 167.6
B 5 235 919190 6052.07 775 753 151.8
B 5 255 303360 1994.04 775 753 151.8
B 0 213 199317 1308.44 775 753 151.8
C 15 158 790146 4397.68 775 780 179.5
C 3 233 232342 1290.07 775 780 179.5
C 14 254 80600 444.69 775 780 179.5
D 5 235 902798 4784.83 751 729 188.5
D 12 233 369722 1957.24 751 729 188.5
D 4 212 367363 1944.73 751 729 188.5

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