ASTROSAT CZTI

Data Quality Report

Orbit 10494

Creation date: 2024-06-27T16:00:08.456008
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/AS1G07_057T01_9000001520_10494cztM0_level2.evt modeM0/AS1G07_057T01_9000001520_10494cztM0_level2_quad_clean.evt
Size (bytes)499,029,12091,661,760
Size475.9 MB 87.4 MB
Events in quadrant A3,349,082584,007
Events in quadrant B3,849,653593,888
Events in quadrant C3,269,100578,857
Events in quadrant D4,186,664548,222

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142013
B0158262
C0142972
D0167512

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6761560.828280%
B67612443.608934%
C6761530.783908%
D67611061.567815%

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 9346 6763 0 0 0.00% 0.00%
B 9346 6763 85 85 0.91% 1.26%
C 9346 6763 3 3 0.03% 0.04%
D 9346 6763 55 55 0.59% 0.81%

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 3 80 76810 442.04 847 832 171.9
A 0 226 7745 40.22 847 832 171.9
A 12 194 6844 34.98 847 832 171.9
B 4 239 519890 3252.28 839 819 159.6
B 0 214 30769 187.65 839 819 159.6
B 12 111 17693 105.73 839 819 159.6
C 14 234 74519 385.71 819 823 191.1
C 13 61 6045 27.33 819 823 191.1
C 8 222 2673 9.68 819 823 191.1
D 8 195 618089 3187.56 809 787 193.7
D 1 52 188625 969.94 809 787 193.7
D 12 233 114937 589.44 809 787 193.7

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