ASTROSAT CZTI

Data Quality Report

Orbit 20211127_A10_058T15_9000004786_level2

Creation date: 2021-11-30T20:02:58.679168
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_058T15_9000004786cztM0_level2_bc.evt modeM0/AS1A10_058T15_9000004786cztM0_level2_quad_clean.evt
Size (bytes)7,107,514,5601,489,161,600
Size6.6 GB 1.4 GB
Events in quadrant A31,342,2859,679,497
Events in quadrant B44,119,4889,397,683
Events in quadrant C42,673,4379,536,659
Events in quadrant D89,368,2898,653,266

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02601100
B03235730
C02894920
D04714400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04370
B04370
C04370
D04380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023440
B023420
C023440
D023400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1143479210.805443%
B11433273986.470629%
C11426233882.965115%
D1141921512613.246112%

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 162858 114491 51 51 0.03% 0.04%
B 162858 114470 388 388 0.24% 0.34%
C 162858 114404 1321 1321 0.81% 1.15%
D 162858 114345 2800 2800 1.72% 2.45%

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 6585384 4842.67 6279 6201 1358.6
A 13 254 157454 111.33 6279 6201 1358.6
A 12 16 134788 94.65 6279 6201 1358.6
B 5 172 8120164 6693.3 6200 6090 1212.3
B 0 219 5204175 4287.9 6200 6090 1212.3
B 5 200 1227337 1007.41 6200 6090 1212.3
C 1 23 7401984 5476.83 6062 6040 1350.4
C 15 214 4667557 3451.94 6062 6040 1350.4
C 15 208 2434743 1798.5 6062 6040 1350.4
D 8 195 27379478 18098.6 5819 5703 1512.5
D 1 52 12280559 8115.71 5819 5703 1512.5
D 2 250 7450926 4922.53 5819 5703 1512.5

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