ASTROSAT CZTI

Data Quality Report

Orbit 27695

Creation date: 2024-06-27T19:43:14.370154
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/AS1T03_262T01_9000003988_27695cztM0_level2.evt modeM0/AS1T03_262T01_9000003988_27695cztM0_level2_quad_clean.evt
Size (bytes)593,913,600105,868,800
Size566.4 MB 101.0 MB
Events in quadrant A3,993,720668,719
Events in quadrant B4,132,576675,805
Events in quadrant C4,220,529653,940
Events in quadrant D5,078,472632,483

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172790
B0175240
C0177130
D0205940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82682412.914852%
B82693354.051276%
C82692953.567541%
D82693824.619664%

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 8813 8268 0 0 0.00% 0.00%
B 8814 8269 0 0 0.00% 0.00%
C 8814 8269 2 2 0.02% 0.02%
D 8814 8270 167 167 1.89% 2.02%

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 6 16 13816 61.35 1029 1004 208.8
A 13 254 13422 59.46 1029 1004 208.8
A 3 137 10429 45.13 1029 1004 208.8
B 0 190 51158 250.19 1026 998 200.5
B 0 230 25282 121.13 1026 998 200.5
B 12 111 25213 120.78 1026 998 200.5
C 14 238 156946 661.82 996 998 235.6
C 3 233 119051 501.0 996 998 235.6
C 2 16 45253 187.81 996 998 235.6
D 1 52 528640 2203.11 996 965 239.5
D 12 2 501403 2089.39 996 965 239.5
D 6 112 95322 393.95 996 965 239.5

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