ASTROSAT CZTI

Data Quality Report

Orbit 48602

Creation date: 2024-09-23T01:32:15.819674
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/AS1A13_037T01_9000006436_48602cztM0_level2.fits modeM0/AS1A13_037T01_9000006436_48602cztM0_level2_quad_clean.evt
Size (bytes)513,587,52098,735,040
Size489.8 MB 94.2 MB
Events in quadrant A6,642,302660,322
Events in quadrant B3,954,639661,506
Events in quadrant C2,732,578670,191
Events in quadrant D5,181,546547,784

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240601
B0165361
C0132201
D0200791

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64472113.272840%
B64484416.839330%
C6448350.542804%
D644874111.491935%

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 7447 6448 72 72 0.97% 1.12%
B 7448 6449 287 287 3.85% 4.45%
C 7448 6449 3 3 0.04% 0.05%
D 7448 6449 645 645 8.66% 10.00%

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 3985142 28159.22 676 660 141.5
A 13 248 36324 252.05 676 660 141.5
A 13 254 12802 85.81 676 660 141.5
B 12 16 974836 7395.63 667 644 131.7
B 0 186 164642 1245.0 667 644 131.7
B 4 21 67355 506.44 667 644 131.7
C 14 254 65145 401.62 678 682 160.5
C 12 249 13813 81.81 678 682 160.5
C 12 250 5728 31.44 678 682 160.5
D 2 165 2266687 14201.49 638 618 159.6
D 2 249 203486 1271.38 638 618 159.6
D 10 199 85378 531.19 638 618 159.6

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