ASTROSAT CZTI

Data Quality Report

Orbit 32726

Creation date: 2024-06-27T20:41:16.623804
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/AS1A10_123T04_9000004726_32726cztM0_level2.evt modeM0/AS1A10_123T04_9000004726_32726cztM0_level2_quad_clean.evt
Size (bytes)1,133,847,360171,630,720
Size1.1 GB 163.7 MB
Events in quadrant A6,507,9951,088,452
Events in quadrant B10,036,2061,089,098
Events in quadrant C6,495,9771,107,907
Events in quadrant D10,440,1091,033,688

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0277146
B0382294
C0276674
D0399014

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02560
B02560
C02560
D02560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A127202331.831761%
B12720171113.451258%
C12720950.746855%
D127208056.328616%

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 38478 12723 156 156 0.41% 1.23%
B 38478 12722 927 927 2.41% 7.29%
C 38478 12723 86 86 0.22% 0.68%
D 38478 12723 668 668 1.74% 5.25%

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 15 249 653417 2225.59 1465 1438 292.9
A 15 237 140207 473.7 1465 1438 292.9
A 13 254 24222 77.78 1465 1438 292.9
B 12 1 2633734 10367.58 1360 1328 253.9
B 4 206 920475 3620.01 1360 1328 253.9
B 3 26 269933 1057.89 1360 1328 253.9
C 9 236 256271 770.86 1441 1453 330.6
C 15 208 218480 656.54 1441 1453 330.6
C 0 10 147605 442.13 1441 1453 330.6
D 2 250 1022558 3043.98 1403 1372 335.5
D 7 80 748462 2226.95 1403 1372 335.5
D 8 195 539138 1602.99 1403 1372 335.5

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