ASTROSAT CZTI

Data Quality Report

Orbit 24116

Creation date: 2024-06-27T19:02:20.758393
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/AS1C05_012T04_9000003564_24116cztM0_level2.evt modeM0/AS1C05_012T04_9000003564_24116cztM0_level2_quad_clean.evt
Size (bytes)830,865,600215,202,240
Size792.4 MB 205.2 MB
Events in quadrant A5,079,6671,508,483
Events in quadrant B5,327,5941,502,967
Events in quadrant C5,147,4541,416,196
Events in quadrant D8,915,5321,381,097

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02100
B02100
C02100
D02100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210682
B0217222
C0214862
D0332872

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A102401231.201172%
B102411901.855288%
C102411861.816229%
D102415735.595157%

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 12785 10241 0 0 0.00% 0.00%
B 12786 10241 26 26 0.20% 0.25%
C 12786 10242 12 12 0.09% 0.12%
D 12786 10242 489 489 3.82% 4.77%

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 13 254 16062 56.99 1316 1294 259.1
A 0 226 11703 40.17 1316 1294 259.1
A 3 137 10765 36.55 1316 1294 259.1
B 5 172 79219 332.09 1286 1260 234.8
B 4 171 38301 157.79 1286 1260 234.8
B 0 245 35522 145.95 1286 1260 234.8
C 14 238 201067 713.11 1229 1239 280.2
C 0 239 118462 418.33 1229 1239 280.2
C 7 247 21901 73.74 1229 1239 280.2
D 8 195 3144397 10495.56 1259 1223 299.5
D 1 52 900146 3001.65 1259 1223 299.5
D 12 233 44486 144.46 1259 1223 299.5

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