ASTROSAT CZTI

Data Quality Report

Orbit 34707

Creation date: 2022-03-02T16:26:53.974573
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/AS1A11_069T01_9000004972_34707cztM0_level2.evt modeM0/AS1A11_069T01_9000004972_34707cztM0_level2_quad_clean.evt
Size (bytes)939,412,800124,882,560
Size895.9 MB 119.1 MB
Events in quadrant A7,284,320780,629
Events in quadrant B5,362,759789,293
Events in quadrant C5,279,521770,296
Events in quadrant D9,817,709717,191

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02140
B02140
C02140
D02140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0286483
B0226643
C0219293
D0364983

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A104597617.276030%
B104591030.984798%
C10459780.745769%
D104593693.528062%

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 13233 10461 619 619 4.68% 5.92%
B 13233 10461 45 45 0.34% 0.43%
C 13233 10461 41 41 0.31% 0.39%
D 13233 10461 308 308 2.33% 2.94%

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 2393481 10222.29 1163 1140 234.0
A 9 143 145188 615.51 1163 1140 234.0
A 7 48 129520 548.56 1163 1140 234.0
B 5 255 179392 785.12 1190 1158 227.0
B 5 172 175524 768.09 1190 1158 227.0
B 0 197 46552 199.96 1190 1158 227.0
C 15 214 442517 1623.13 1168 1175 271.9
C 0 10 185104 676.44 1168 1175 271.9
C 14 67 49236 176.75 1168 1175 271.9
D 8 195 3551973 12553.84 1154 1120 282.8
D 10 199 365055 1286.67 1154 1120 282.8
D 14 52 241629 850.31 1154 1120 282.8

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