ASTROSAT CZTI

Data Quality Report

Orbit 52071

Creation date: 2025-05-14T18:31:43.108093
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_011T07_9000006470_52071cztM0_level2.fits modeM0/AS1C09_011T07_9000006470_52071cztM0_level2_quad_clean.evt
Size (bytes)203,751,36011,450,880
Size194.3 MB 10.9 MB
Events in quadrant A1,879,42566,134
Events in quadrant B1,143,631103,816
Events in quadrant C1,630,53581,202
Events in quadrant D2,796,1787,624

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A063940
B041640
C056552
D090810

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A115953345.987921%
B115917915.444349%
C115833829.188256%
D1158108893.955095%

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 1159 1159 473 473 40.81% 40.81%
B 1159 1159 133 133 11.48% 11.48%
C 1158 1158 274 274 23.66% 23.66%
D 1158 1158 896 896 77.37% 77.37%

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 4 95 1298020 44299.18 113 110 29.3
A 5 240 44342 1509.69 113 110 29.3
A 6 196 30913 1051.34 113 110 29.3
B 10 128 580328 21900.76 115 112 26.5
B 10 254 26866 1009.85 115 112 26.5
B 4 171 18767 704.15 115 112 26.5
C 15 224 1144940 37342.83 105 103 30.7
C 13 3 18314 594.01 105 103 30.7
C 12 252 13455 435.52 105 103 30.7
D 6 42 1092925 54481.08 64 61 20.1
D 15 94 689712 34380.24 64 61 20.1
D 13 187 344825 17187.06 64 61 20.1

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