ASTROSAT CZTI

Data Quality Report

Orbit 36866

Creation date: 2024-06-27T21:32:32.203210
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_075T01_9000005244_36866cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36866cztM0_level2_quad_clean.evt
Size (bytes)348,580,80050,319,360
Size332.4 MB 48.0 MB
Events in quadrant A2,725,844387,876
Events in quadrant B812,5337,196
Events in quadrant C3,317,219383,873
Events in quadrant D3,335,971372,709

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116063
B053802
C0131212
D0135662

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5283260.492145%
B52835283100.000000%
C52831823.445012%
D52831502.839296%

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 7046 5284 14 14 0.20% 0.26%
B 7045 5282 0 0 0.00% 0.00%
C 7046 5284 157 157 2.23% 2.97%
D 7046 5284 115 115 1.63% 2.18%

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 244951 1986.94 607 594 123.0
A 9 143 70329 567.04 607 594 123.0
A 13 248 21712 171.72 607 594 123.0
B 12 243 731931 166997.89 13 12 4.4
B 12 144 13768 3138.63 13 12 4.4
B 0 213 2602 590.95 13 12 4.4
C 0 10 355051 2612.25 587 592 135.7
C 0 207 317874 2338.26 587 592 135.7
C 15 214 223626 1643.69 587 592 135.7
D 13 249 410985 2863.79 589 573 143.3
D 2 249 198759 1382.91 589 573 143.3
D 12 218 74392 515.1 589 573 143.3

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