ASTROSAT CZTI

Data Quality Report

Orbit 48611

Creation date: 2024-09-23T17:24:29.682684
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_48611cztM0_level2.fits modeM0/AS1A13_037T01_9000006436_48611cztM0_level2_quad_clean.evt
Size (bytes)554,204,160129,476,160
Size528.5 MB 123.5 MB
Events in quadrant A8,449,478822,314
Events in quadrant B3,846,862883,636
Events in quadrant C3,588,307859,911
Events in quadrant D3,979,426771,796

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0309430
B0175800
C0172870
D0182580

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83864815.735750%
B83861972.349153%
C8387170.202695%
D8387420.500775%

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 8386 8386 121 121 1.44% 1.44%
B 8386 8386 10 10 0.12% 0.12%
C 8387 8387 0 0 0.00% 0.00%
D 8387 8387 20 20 0.24% 0.24%

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 4435244 23040.47 917 895 192.5
A 13 248 446736 2316.55 917 895 192.5
A 13 254 14352 69.92 917 895 192.5
B 5 255 72522 386.87 929 896 185.1
B 12 16 45803 242.56 929 896 185.1
B 0 197 35582 187.35 929 896 185.1
C 12 250 10452 43.92 914 915 217.1
C 14 254 8079 32.99 914 915 217.1
C 3 233 6930 27.7 914 915 217.1
D 2 165 234988 1034.17 904 872 226.4
D 10 199 182536 802.47 904 872 226.4
D 2 234 46762 202.71 904 872 226.4

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