ASTROSAT CZTI

Data Quality Report

Orbit 00186

Creation date: 2024-06-27T13:57:41.949736
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_136T01_9000000014_00186cztM0_level2.evt modeM0/AS1P01_136T01_9000000014_00186cztM0_level2_quad_clean.evt
Size (bytes)871,548,48058,573,440
Size831.2 MB 55.9 MB
Events in quadrant A5,558,317367,431
Events in quadrant B5,587,338382,922
Events in quadrant C5,243,605373,494
Events in quadrant D9,694,763320,298

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198531
B0199361
C0189031
D0323691

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A468030.064103%
B468030.064103%
C4680110.235043%
D4680170536.431624%

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 4681 4681 123 123 2.63% 2.63%
B 4681 4681 110 110 2.35% 2.35%
C 4681 4681 64 64 1.37% 1.37%
D 4681 4681 2302 2302 49.18% 49.18%

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 5 244 20044 59.9 1425 1416 311.0
A 13 239 8593 23.08 1425 1416 311.0
A 0 253 8308 22.16 1425 1416 311.0
B 5 85 26085 72.42 1443 1451 340.2
B 0 247 22960 63.23 1443 1451 340.2
B 4 67 6275 14.18 1443 1451 340.2
C 0 202 32333 84.47 1317 1365 366.6
C 0 188 13081 31.96 1317 1365 366.6
C 7 159 7866 17.73 1317 1365 366.6
D 12 249 5371956 16303.79 1096 1134 329.4
D 13 21 23785 68.76 1096 1134 329.4
D 1 85 16356 46.21 1096 1134 329.4

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