ASTROSAT CZTI

Data Quality Report

Orbit 50339

Creation date: 2025-01-18T10:51:34.096667
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/AS1C09_003T01_9000006442_50339cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50339cztM0_level2_quad_clean.evt
Size (bytes)1,128,248,64077,258,880
Size1.1 GB 73.7 MB
Events in quadrant A5,092,434660,531
Events in quadrant B4,854,148715,734
Events in quadrant C15,478,600383,414
Events in quadrant D15,778,41269,293

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0199730
B0192870
C0509700
D0517980

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72413184.391659%
B72414135.703632%
C7241521672.034249%
D72407240100.000000%

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 7240 7240 220 220 3.04% 3.04%
B 7240 7240 337 337 4.65% 4.65%
C 7240 7240 4755 4755 65.68% 65.68%
D 7238 7236 5477 5477 75.67% 75.69%

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 8 248 408014 2172.27 750 729 187.5
A 3 231 323802 1723.12 750 729 187.5
A 3 130 250829 1333.92 750 729 187.5
B 12 0 724566 4545.27 748 723 159.3
B 9 218 163804 1024.04 748 723 159.3
B 8 128 116272 725.57 748 723 159.3
C 15 127 4622507 35825.36 457 453 129.0
C 15 196 1679607 13015.06 457 453 129.0
C 0 209 1548718 12000.54 457 453 129.0
D 7 61 12544688 338914.13 102 96 37.0
D 12 1 440515 11898.69 102 96 37.0
D 12 6 295187 7972.4 102 96 37.0

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