ASTROSAT CZTI

Data Quality Report

Orbit 53334

Creation date: 2025-08-08T13:16:44.622884
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_011T08_9000006492_53334cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53334cztM0_level2_quad_clean.evt
Size (bytes)2,323,480,320298,797,120
Size2.2 GB 285.0 MB
Events in quadrant A14,134,7692,126,100
Events in quadrant B15,933,1432,276,743
Events in quadrant C41,448,0061,060,069
Events in quadrant D12,692,6291,979,032

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0589084
B0636433
C01391563
D0541953

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04740
B04740
C04740
D04740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2329911124.772737%
B2329911975.137560%
C232991161349.843341%
D232993441.476458%

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 24869 23300 752 752 3.02% 3.23%
B 24869 23301 730 730 2.94% 3.13%
C 24869 23299 10915 10915 43.89% 46.85%
D 24869 23300 187 187 0.75% 0.80%

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 3 62 1635912 2685.8 2417 2358 608.2
A 15 174 1110473 1821.9 2417 2358 608.2
A 0 8 795849 1304.61 2417 2358 608.2
B 4 206 2332739 4597.09 2393 2305 506.9
B 5 172 1659542 3269.12 2393 2305 506.9
B 5 185 553269 1086.85 2393 2305 506.9
C 1 241 17423648 37091.67 1704 1685 469.7
C 15 158 9410392 20031.3 1704 1685 469.7
C 15 224 4480721 9535.95 1704 1685 469.7
D 2 62 859774 1270.63 2376 2269 674.9
D 2 249 635745 938.67 2376 2269 674.9
D 12 3 323702 476.29 2376 2269 674.9

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