ASTROSAT CZTI

Data Quality Report

Orbit 06850

Creation date: 2024-06-27T15:12:27.427451
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/AS1G06_168T13_9000000942_06850cztM0_level2.evt modeM0/AS1G06_168T13_9000000942_06850cztM0_level2_quad_clean.evt
Size (bytes)160,824,96024,796,800
Size153.4 MB 23.6 MB
Events in quadrant A1,102,417148,980
Events in quadrant B1,158,642150,538
Events in quadrant C1,113,215149,409
Events in quadrant D1,346,158144,120

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A047051
B048501
C047621
D055071

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2179431.973382%
B2179663.028912%
C2179261.193208%
D2179884.038550%

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 2764 2180 0 0 0.00% 0.00%
B 2764 2180 2 2 0.07% 0.09%
C 2764 2180 4 4 0.14% 0.18%
D 2764 2180 51 51 1.85% 2.34%

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 15 239 21838 365.46 274 268 59.0
A 8 15 20936 350.18 274 268 59.0
A 0 226 2658 40.49 274 268 59.0
B 4 48 18505 325.41 279 271 56.0
B 0 219 13707 239.78 279 271 56.0
B 0 214 12001 209.34 279 271 56.0
C 10 22 30164 460.17 270 270 65.0
C 9 68 20070 304.78 270 270 65.0
C 9 247 6856 101.37 270 270 65.0
D 2 33 214133 3172.48 266 256 67.4
D 14 34 72327 1069.04 266 256 67.4
D 5 81 18611 272.26 266 256 67.4

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