ASTROSAT CZTI

Data Quality Report

Orbit 51239

Creation date: 2025-03-19T16:13:50.628237
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/AS1C07_001T01_9000006454_51239cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51239cztM0_level2_quad_clean.evt
Size (bytes)736,381,44091,059,840
Size702.3 MB 86.8 MB
Events in quadrant A4,967,249608,122
Events in quadrant B4,176,841683,925
Events in quadrant C6,727,477569,149
Events in quadrant D10,846,454408,918

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0194660
B0172410
C0248540
D0371635

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69873645.209675%
B69871662.375841%
C698773010.447975%
D6986231033.066132%

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 6987 6987 249 249 3.56% 3.56%
B 6987 6987 92 92 1.32% 1.32%
C 6987 6987 719 719 10.29% 10.29%
D 6986 6985 2211 2211 31.65% 31.65%

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 12 250 645906 3691.91 705 687 174.8
A 12 3 456433 2607.75 705 687 174.8
A 9 160 374232 2137.4 705 687 174.8
B 7 252 300486 1998.51 710 686 150.0
B 10 254 223705 1486.68 710 686 150.0
B 5 185 174634 1159.56 710 686 150.0
C 4 12 1526198 8259.7 675 671 184.7
C 0 209 726106 3927.74 675 671 184.7
C 10 171 672984 3640.12 675 671 184.7
D 12 20 3760005 22951.5 577 558 163.8
D 2 62 2924842 17852.81 577 558 163.8
D 2 216 391775 2388.39 577 558 163.8

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