ASTROSAT CZTI

Data Quality Report

Orbit 19598

Creation date: 2024-06-27T18:04:36.680170
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/AS1T03_115T01_9000002914_19598cztM0_level2.evt modeM0/AS1T03_115T01_9000002914_19598cztM0_level2_quad_clean.evt
Size (bytes)743,751,360145,175,040
Size709.3 MB 138.4 MB
Events in quadrant A5,150,725934,434
Events in quadrant B5,215,247959,171
Events in quadrant C5,192,938903,944
Events in quadrant D6,262,485880,407

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02120
B02120
C02120
D02120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216842
B0218862
C0219552
D0256582

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10379340.327585%
B10380790.761079%
C10380910.876686%
D103803743.603083%

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 12999 10381 4 4 0.03% 0.04%
B 13000 10382 6 6 0.05% 0.06%
C 13000 10381 5 5 0.04% 0.05%
D 13000 10382 286 286 2.20% 2.75%

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 5 16 54738 206.2 1304 1282 259.2
A 11 29 49560 186.23 1304 1282 259.2
A 11 47 21236 76.97 1304 1282 259.2
B 4 216 54330 219.28 1301 1272 242.0
B 12 111 27639 108.97 1301 1272 242.0
B 11 111 23688 92.64 1301 1272 242.0
C 14 238 198329 698.64 1235 1245 282.1
C 5 112 107225 375.68 1235 1245 282.1
C 3 233 42977 147.93 1235 1245 282.1
D 1 52 1109737 3713.32 1235 1197 298.5
D 7 38 221279 737.22 1235 1197 298.5
D 7 238 158036 525.37 1235 1197 298.5

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