ASTROSAT CZTI

Data Quality Report

Orbit 16781

Creation date: 2024-06-27T17:27:41.242390
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/AS1A05_004T02_9000002490_16781cztM0_level2.evt modeM0/AS1A05_004T02_9000002490_16781cztM0_level2_quad_clean.evt
Size (bytes)727,018,56098,216,640
Size693.3 MB 93.7 MB
Events in quadrant A5,891,865602,440
Events in quadrant B3,586,159647,843
Events in quadrant C4,176,484625,617
Events in quadrant D7,873,981593,300

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0224782
B0153961
C0173511
D0284831

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A724378410.824244%
B7243630.869805%
C72432092.885545%
D72437029.692117%

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 7524 7245 546 546 7.26% 7.54%
B 7524 7245 2 2 0.03% 0.03%
C 7524 7245 41 41 0.54% 0.57%
D 7524 7245 684 684 9.09% 9.44%

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 15 174 2676607 15980.76 830 810 167.4
A 15 190 12693 70.97 830 810 167.4
A 0 226 7255 38.49 830 810 167.4
B 0 229 64201 383.94 859 834 165.0
B 15 35 48674 289.86 859 834 165.0
B 0 189 37849 224.27 859 834 165.0
C 3 233 742924 3816.52 829 833 194.4
C 14 238 125868 643.05 829 833 194.4
C 0 207 75369 383.33 829 833 194.4
D 1 52 4154238 20531.82 823 798 202.3
D 12 218 244633 1205.36 823 798 202.3
D 11 176 196890 969.35 823 798 202.3

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