ASTROSAT CZTI

Data Quality Report

Orbit 45835

Creation date: 2024-06-27T23:16:41.251937
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_185T01_9000006128_45835cztM0_level2.fits modeM0/AS1T05_185T01_9000006128_45835cztM0_level2_quad_clean.evt
Size (bytes)568,488,960109,915,200
Size542.2 MB 104.8 MB
Events in quadrant A5,930,059740,904
Events in quadrant B5,930,242737,746
Events in quadrant C2,990,938757,168
Events in quadrant D5,689,065639,409

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0218552
B0221142
C0133922
D0213623

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65002013.092308%
B65006289.661538%
C6500370.569231%
D64995488.432066%

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 7630 6501 41 41 0.54% 0.63%
B 7630 6501 335 335 4.39% 5.15%
C 7630 6501 0 0 0.00% 0.00%
D 7629 6500 458 458 6.00% 7.05%

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 2907347 18961.82 742 726 153.3
A 13 248 76525 494.49 742 726 153.3
A 7 3 40481 259.35 742 726 153.3
B 3 112 2405431 17105.73 731 710 140.6
B 4 171 188606 1336.58 731 710 140.6
B 5 63 178418 1264.11 731 710 140.6
C 2 14 41687 233.6 754 758 175.2
C 3 233 10264 54.26 754 758 175.2
C 13 61 5083 24.68 754 758 175.2
D 11 241 730307 4004.71 725 703 182.2
D 1 52 626784 3436.49 725 703 182.2
D 8 48 473777 2596.65 725 703 182.2

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