ASTROSAT CZTI

Data Quality Report

Orbit 43971

Creation date: 2024-06-27T22:57:50.502355
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/AS1A13_065T06_9000005924_43971cztM0_level2.fits modeM0/AS1A13_065T06_9000005924_43971cztM0_level2_quad_clean.evt
Size (bytes)1,374,854,400296,398,080
Size1.3 GB 282.7 MB
Events in quadrant A17,175,9381,910,756
Events in quadrant B9,324,3842,059,115
Events in quadrant C9,382,9901,990,874
Events in quadrant D13,554,6191,716,745

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03840
B03840
C03840
D03840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0657173
B0405673
C0412953
D0528004

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1881515628.301887%
B188154502.391709%
C188163631.929209%
D1881512796.797768%

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 19945 18820 914 914 4.58% 4.86%
B 19945 18818 56 56 0.28% 0.30%
C 19946 18820 82 82 0.41% 0.44%
D 19945 18819 956 956 4.79% 5.08%

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 15 223 3523379 8022.64 2116 2069 438.9
A 10 83 2860360 6512.07 2116 2069 438.9
A 14 238 2424839 5519.82 2116 2069 438.9
B 5 172 364253 852.92 2153 2083 424.6
B 0 213 142291 330.19 2153 2083 424.6
B 0 183 97654 225.07 2153 2083 424.6
C 14 254 750165 1492.49 2135 2144 501.2
C 15 157 202194 399.15 2135 2144 501.2
C 3 233 53268 102.01 2135 2144 501.2
D 5 235 1401768 2615.07 2103 2039 535.3
D 12 17 857568 1598.36 2103 2039 535.3
D 4 222 615147 1145.45 2103 2039 535.3

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