ASTROSAT CZTI

Data Quality Report

Orbit 42836

Creation date: 2024-06-27T22:44:49.409513
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/AS1T05_138T01_9000005828_42836cztM0_level2.fits modeM0/AS1T05_138T01_9000005828_42836cztM0_level2_quad_clean.evt
Size (bytes)329,495,04088,182,720
Size314.2 MB 84.1 MB
Events in quadrant A3,197,866591,058
Events in quadrant B2,296,453611,924
Events in quadrant C2,997,690589,423
Events in quadrant D3,315,413527,073

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126742
B0102122
C0119902
D01321614

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0340
C0340
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5004270.539568%
B5004220.439648%
C5003781.559065%
D50011282.559488%

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 7067 5005 12 12 0.17% 0.24%
B 7067 5005 13 13 0.18% 0.26%
C 7066 5004 69 69 0.98% 1.38%
D 7066 5003 142 142 2.01% 2.84%

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 581020 5001.36 564 554 116.1
A 15 222 259655 2232.44 564 554 116.1
A 12 189 142771 1225.36 564 554 116.1
B 3 112 35721 322.78 565 552 109.0
B 5 207 14530 128.29 565 552 109.0
B 5 172 13732 120.97 565 552 109.0
C 14 254 374311 2899.34 548 552 128.9
C 7 220 233343 1805.82 548 552 128.9
C 15 214 203036 1570.72 548 552 128.9
D 1 52 511915 3942.96 537 523 129.7
D 14 49 231792 1783.14 537 523 129.7
D 13 249 183648 1411.94 537 523 129.7

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