ASTROSAT CZTI

Data Quality Report

Orbit 52846

Creation date: 2025-07-16T10:12:32.983167
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_9000006482_52846cztM0_level2.fits modeM0/AS1C09_011T08_9000006482_52846cztM0_level2_quad_clean.evt
Size (bytes)863,925,12077,685,120
Size823.9 MB 74.1 MB
Events in quadrant A5,815,967588,972
Events in quadrant B7,824,025542,597
Events in quadrant C5,640,519524,422
Events in quadrant D12,217,870260,787

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0215231
B0275871
C0212131
D0405881

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62345659.063202%
B6235137522.052927%
C623588414.178027%
D6235364558.460305%

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 7424 6235 436 436 5.87% 6.99%
B 7425 6236 936 936 12.61% 15.01%
C 7425 6236 709 709 9.55% 11.37%
D 7425 6235 3107 3107 41.85% 49.83%

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 1329019 8092.32 651 635 164.2
A 9 191 1021457 6218.7 651 635 164.2
A 4 238 246074 1495.18 651 635 164.2
B 8 3 4219234 33118.25 606 585 127.4
B 0 213 349171 2736.55 606 585 127.4
B 7 0 213231 1669.36 606 585 127.4
C 15 224 2524833 14721.43 619 614 171.5
C 4 5 365898 2130.36 619 614 171.5
C 12 249 68935 398.45 619 614 171.5
D 12 2 5673648 43326.41 451 430 130.9
D 8 176 3700932 28260.76 451 430 130.9
D 10 172 280357 2137.8 451 430 130.9

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