ASTROSAT CZTI

Data Quality Report

Orbit 40420

Creation date: 2024-06-27T22:15:53.443190
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/AS1A12_022T01_9000005540_40420cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40420cztM0_level2_quad_clean.evt
Size (bytes)316,350,72089,904,960
Size301.7 MB 85.7 MB
Events in quadrant A2,819,601611,250
Events in quadrant B2,833,460623,639
Events in quadrant C2,641,598600,133
Events in quadrant D2,995,472510,870

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118303
B0119482
C0112552
D0127492

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5385190.352832%
B5385480.891365%
C5385260.482823%
D53855219.675023%

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 9299 5387 9 9 0.10% 0.17%
B 9299 5387 30 30 0.32% 0.56%
C 9299 5387 18 18 0.19% 0.33%
D 9299 5387 80 80 0.86% 1.49%

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 481947 4031.62 584 574 119.4
A 13 248 41783 345.14 584 574 119.4
A 2 79 34079 280.61 584 574 119.4
B 5 255 221068 1970.71 581 566 111.9
B 4 170 139079 1237.94 581 566 111.9
B 7 202 135094 1202.33 581 566 111.9
C 15 214 230298 1712.58 576 579 134.1
C 14 254 146550 1088.23 576 579 134.1
C 0 10 11626 82.36 576 579 134.1
D 12 227 305541 2269.02 545 529 134.4
D 13 171 224829 1668.6 545 529 134.4
D 12 191 162919 1208.04 545 529 134.4

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