ASTROSAT CZTI

Data Quality Report

Orbit 30608

Creation date: 2024-06-27T20:17:37.775226
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_021T09_9000004410_30608cztM0_level2.evt modeM0/AS1A10_021T09_9000004410_30608cztM0_level2_quad_clean.evt
Size (bytes)1,143,740,160142,323,840
Size1.1 GB 135.7 MB
Events in quadrant A6,590,131901,718
Events in quadrant B9,072,686905,647
Events in quadrant C6,587,078860,579
Events in quadrant D11,598,998829,940

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0273342
B0355324
C0269992
D0431262

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02400
B02400
C02400
D02400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A117362171.849012%
B117351371.167448%
C117352482.113336%
D117353883.306349%

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 12966 11738 109 109 0.84% 0.93%
B 12965 11737 7 7 0.05% 0.06%
C 12965 11737 45 45 0.35% 0.38%
D 12965 11737 274 274 2.11% 2.33%

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 0 13 1107774 3886.41 1415 1385 284.7
A 8 192 23365 77.21 1415 1385 284.7
A 13 254 21561 70.87 1415 1385 284.7
B 6 159 3365161 12431.8 1405 1367 270.6
B 0 229 103394 377.07 1405 1367 270.6
B 12 111 34354 121.91 1405 1367 270.6
C 15 208 831911 2625.26 1346 1355 316.4
C 14 238 216079 678.71 1346 1355 316.4
C 3 233 186427 584.98 1346 1355 316.4
D 8 195 5076529 15793.71 1349 1313 321.3
D 1 52 658973 2046.59 1349 1313 321.3
D 5 222 213575 660.54 1349 1313 321.3

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