ASTROSAT CZTI

Data Quality Report

Orbit 35593

Creation date: 2022-04-29T00:36:14.228284
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_065T04_9000005098_35593cztM0_level2.evt modeM0/AS1A10_065T04_9000005098_35593cztM0_level2_quad_clean.evt
Size (bytes)734,915,52062,161,920
Size700.9 MB 59.3 MB
Events in quadrant A6,705,875353,387
Events in quadrant B3,501,090446,010
Events in quadrant C3,302,071436,294
Events in quadrant D8,397,783280,923

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0233803
B0137222
C0129542
D0285014

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5192144927.908320%
B51923186.124807%
C51922304.429892%
D5191214441.302254%

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 7104 5193 1376 1376 19.37% 26.50%
B 7104 5193 238 238 3.35% 4.58%
C 7104 5193 165 165 2.32% 3.18%
D 7104 5193 1926 1926 27.11% 37.09%

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 15 169 4464562 41117.95 541 531 108.6
A 10 83 133451 1224.31 541 531 108.6
A 13 6 12833 113.31 541 531 108.6
B 5 172 1036471 9109.33 604 589 113.7
B 0 182 31781 274.29 604 589 113.7
B 4 81 29195 251.55 604 589 113.7
C 0 10 659937 4816.8 591 596 136.9
C 15 214 210359 1532.42 591 596 136.9
C 15 159 107953 784.29 591 596 136.9
D 7 80 5424100 46345.48 476 463 117.0
D 13 249 344367 2938.69 476 463 117.0
D 12 6 296338 2528.28 476 463 117.0

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