ASTROSAT CZTI

Data Quality Report

Orbit 36486

Creation date: 2022-06-28T08:52:57.865652
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/AS1A11_049T04_9000005210_36486cztM0_level2.evt modeM0/AS1A11_049T04_9000005210_36486cztM0_level2_quad_clean.evt
Size (bytes)810,048,960112,870,080
Size772.5 MB 107.6 MB
Events in quadrant A5,091,056692,214
Events in quadrant B6,698,828667,860
Events in quadrant C5,285,692679,198
Events in quadrant D6,733,068638,008

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219304
B0270363
C0221523
D0274643

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10692140.130939%
B106924814.498691%
C10692310.289936%
D106924404.115226%

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 14842 10695 0 0 0.00% 0.00%
B 14842 10695 294 294 1.98% 2.75%
C 14842 10695 14 14 0.09% 0.13%
D 14842 10695 343 343 2.31% 3.21%

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 10 83 342430 1391.79 1217 1191 245.2
A 13 254 17501 66.52 1217 1191 245.2
A 13 6 17412 66.16 1217 1191 245.2
B 5 172 989713 4368.33 1186 1156 226.3
B 5 63 476274 2099.5 1186 1156 226.3
B 5 255 348493 1534.85 1186 1156 226.3
C 15 214 458431 1692.09 1169 1177 270.2
C 0 10 256388 944.42 1169 1177 270.2
C 13 61 8060 25.47 1169 1177 270.2
D 13 249 792794 2833.63 1156 1127 279.4
D 2 250 652996 2333.25 1156 1127 279.4
D 2 249 304393 1085.49 1156 1127 279.4

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