ASTROSAT CZTI

Data Quality Report

Orbit 20220523_T05_009T09_9000005148_level2

Creation date: 2022-05-26T16:46:29.852047
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/AS1T05_009T09_9000005148cztM0_level2_bc.evt modeM0/AS1T05_009T09_9000005148cztM0_level2_quad_clean.evt
Size (bytes)275,618,88077,952,960
Size262.9 MB 74.3 MB
Events in quadrant A1,296,454586,849
Events in quadrant B2,462,006181,131
Events in quadrant C2,034,405595,874
Events in quadrant D2,121,695564,133

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125540
B0523620
C0149620
D0155590

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6167100.162153%
B61676167100.000000%
C61671191.929625%
D61672103.405221%

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 7750 6168 0 0 0.00% 0.00%
B 7749 6165 15 15 0.19% 0.24%
C 7750 6167 15 15 0.19% 0.24%
D 7750 6167 23 23 0.30% 0.37%

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 125384 1829.58 295 289 68.4
A 15 169 10953 155.97 295 289 68.4
A 8 144 10322 146.74 295 289 68.4
B 5 31 1010237 38193.69 93 92 26.4
B 5 15 887142 33539.45 93 92 26.4
B 0 190 90914 3433.99 93 92 26.4
C 9 187 540040 7550.49 293 290 71.5
C 15 214 239967 3352.81 293 290 71.5
C 0 10 83567 1164.95 293 290 71.5
D 7 223 267651 3673.63 292 281 72.8
D 2 250 178711 2451.6 292 281 72.8
D 12 227 107800 1477.3 292 281 72.8

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