ASTROSAT CZTI

Data Quality Report

Orbit 42184

Creation date: 2024-06-27T22:38:13.496040
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/AS1A12_088T24_9000005768_42184cztM0_level2.fits modeM0/AS1A12_088T24_9000005768_42184cztM0_level2_quad_clean.evt
Size (bytes)183,096,00051,315,840
Size174.6 MB 48.9 MB
Events in quadrant A1,727,899346,918
Events in quadrant B1,400,165360,042
Events in quadrant C1,671,178330,824
Events in quadrant D1,749,294308,127

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A068871
B060471
C067561
D072361

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2919200.685166%
B291990.308325%
C2919642.192532%
D2919401.370332%

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 4982 2920 11 11 0.22% 0.38%
B 4982 2920 3 3 0.06% 0.10%
C 4982 2920 62 62 1.24% 2.12%
D 4982 2920 49 49 0.98% 1.68%

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 10 83 289922 4152.32 334 327 69.7
A 15 223 113611 1624.31 334 327 69.7
A 13 248 31981 453.87 334 327 69.7
B 5 255 30822 462.89 336 328 65.9
B 0 229 28523 427.99 336 328 65.9
B 15 85 12589 186.12 336 328 65.9
C 8 79 271574 3514.07 325 326 77.2
C 15 214 120225 1553.32 325 326 77.2
C 7 220 6198 76.07 325 326 77.2
D 12 6 239394 2979.51 321 311 80.2
D 1 52 104773 1301.83 321 311 80.2
D 2 16 63772 790.87 321 311 80.2

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