ASTROSAT CZTI

Data Quality Report

Orbit 01166

Creation date: 2024-06-27T14:08:31.831638
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/AS1P01_997T03_9000000216_01166cztM0_level2.evt modeM0/AS1P01_997T03_9000000216_01166cztM0_level2_quad_clean.evt
Size (bytes)1,421,568,00075,856,320
Size1.3 GB 72.3 MB
Events in quadrant A7,326,927618,343
Events in quadrant B8,653,484596,480
Events in quadrant C7,530,383600,050
Events in quadrant D19,123,20037,410

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0274691180
B0315011270
C0281301227
D0665844334

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01368
B01364
C01364
D01364

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A635720.031461%
B63473325.230818%
C634490.141866%
D62256225100.000000%

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 7459 6415 132 132 1.77% 2.06%
B 7459 6420 689 689 9.24% 10.73%
C 7459 6434 131 131 1.76% 2.04%
D 7458 6225 6224 6224 83.45% 99.98%

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 12 243 9142 15.7 1906 1920 460.0
A 11 79 8355 13.99 1906 1920 460.0
A 3 111 6347 9.62 1906 1920 460.0
B 2 32 958113 2043.4 1965 1974 467.9
B 6 53 148299 312.72 1965 1974 467.9
B 15 22 38140 77.29 1965 1974 467.9
C 15 241 303753 585.63 1836 1901 515.4
C 3 111 21985 38.97 1836 1901 515.4
C 3 79 15007 25.43 1836 1901 515.4
D 1 239 18180825 233979.79 246 252 77.7
D 10 125 13642 172.33 246 252 77.7
D 2 170 1498 16.04 246 252 77.7

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