ASTROSAT CZTI

Data Quality Report

Orbit 44358

Creation date: 2024-06-27T23:02:37.337868
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_008T06_9000005994_44358cztM0_level2.fits modeM0/AS1A13_008T06_9000005994_44358cztM0_level2_quad_clean.evt
Size (bytes)625,968,000108,866,880
Size597.0 MB 103.8 MB
Events in quadrant A9,208,394675,733
Events in quadrant B3,742,261787,528
Events in quadrant C3,431,685753,768
Events in quadrant D6,285,158625,364

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0319121
B0152751
C0146191
D0230486

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6503129019.836998%
B65042363.628536%
C65041482.275523%
D650393114.316469%

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 7668 6503 991 991 12.92% 15.24%
B 7669 6504 85 85 1.11% 1.31%
C 7669 6504 76 76 0.99% 1.17%
D 7668 6503 818 818 10.67% 12.58%

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 15 223 3507527 22300.21 754 740 157.3
A 10 83 1668401 10604.92 754 740 157.3
A 13 248 1058860 6728.75 754 740 157.3
B 5 172 191612 1252.87 779 757 152.3
B 7 221 147335 962.22 779 757 152.3
B 0 219 109799 715.81 779 757 152.3
C 14 254 264836 1475.4 758 762 179.0
C 15 208 76495 423.12 758 762 179.0
C 1 3 55854 307.8 758 762 179.0
D 5 235 1064560 5918.23 717 696 179.8
D 13 249 832888 4629.45 717 696 179.8
D 1 52 367009 2037.78 717 696 179.8

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