ASTROSAT CZTI

Data Quality Report

Orbit 14179

Creation date: 2024-06-27T16:51:19.734989
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/AS1A04_229T01_9000002096_14179cztM0_level2.evt modeM0/AS1A04_229T01_9000002096_14179cztM0_level2_quad_clean.evt
Size (bytes)604,532,16090,095,040
Size576.5 MB 85.9 MB
Events in quadrant A4,081,785544,754
Events in quadrant B4,843,951534,930
Events in quadrant C4,158,289529,952
Events in quadrant D4,661,935542,716

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A093
B0104
C0115
D0104

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0245867087
B0279418180
C0245296987
D0278878402

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024169
B023769
C024470
D024068

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8258640.775006%
B82682603.144654%
C8315901.082381%
D82671531.850732%

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 10609 8559 0 0 0.00% 0.00%
B 10006 8569 48 48 0.48% 0.56%
C 9959 8629 7 7 0.07% 0.08%
D 10036 8583 22 22 0.22% 0.26%

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 12 189 117967 559.34 1024 1003 209.1
A 12 96 25006 114.79 1024 1003 209.1
A 0 226 8993 38.21 1024 1003 209.1
B 0 85 493089 2504.18 1029 1006 196.5
B 0 219 116856 589.55 1029 1006 196.5
B 0 189 104017 524.22 1029 1006 196.5
C 3 233 192550 821.09 1001 1006 233.3
C 0 207 48026 201.56 1001 1006 233.3
C 13 61 7370 27.28 1001 1006 233.3
D 8 195 293681 1232.69 980 957 237.5
D 7 55 138494 579.18 980 957 237.5
D 2 152 137569 575.29 980 957 237.5

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