ASTROSAT CZTI

Data Quality Report

Orbit 50967

Creation date: 2025-03-01T09:42:38.683957
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_001T02_9000006452_50967cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_50967cztM0_level2_quad_clean.evt
Size (bytes)1,377,316,800129,214,080
Size1.3 GB 123.2 MB
Events in quadrant A7,684,889951,998
Events in quadrant B9,119,2841,000,048
Events in quadrant C10,618,832853,341
Events in quadrant D22,711,177344,303

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02240
B02240
C02240
D02240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0305012
B0347782
C0393512
D0749602

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A110066075.515174%
B11007113310.293450%
C11007147913.436904%
D11007729166.239666%

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 12391 11007 452 452 3.65% 4.11%
B 12392 11009 824 824 6.65% 7.48%
C 12392 11008 1121 1121 9.05% 10.18%
D 12391 11008 6677 6677 53.89% 60.66%

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 14 254 1154277 4136.51 1107 1080 278.8
A 8 43 734407 2630.44 1107 1080 278.8
A 4 3 458906 1642.22 1107 1080 278.8
B 5 236 2816190 12348.35 1083 1047 228.0
B 4 171 563622 2467.68 1083 1047 228.0
B 4 206 424776 1858.65 1083 1047 228.0
C 15 147 1239202 4228.41 1049 1039 292.8
C 13 49 1135837 3875.41 1049 1039 292.8
C 0 177 637366 2173.1 1049 1039 292.8
D 8 176 19012630 97345.56 689 663 195.3
D 3 12 135429 690.03 689 663 195.3
D 15 185 104625 532.31 689 663 195.3

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