ASTROSAT CZTI

Data Quality Report

Orbit 50787

Creation date: 2025-02-17T05:39:17.862050
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/AS1C07_001T01_9000006450_50787cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50787cztM0_level2_quad_clean.evt
Size (bytes)831,358,08096,485,760
Size792.8 MB 92.0 MB
Events in quadrant A3,971,926701,722
Events in quadrant B4,370,306754,373
Events in quadrant C14,993,926353,982
Events in quadrant D6,855,177587,359

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172303
B0183783
C0497103
D0256433

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75281512.005845%
B75282493.307651%
C7527414155.015278%
D752778210.389265%

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 7778 7532 71 71 0.91% 0.94%
B 7778 7531 63 63 0.81% 0.84%
C 7776 7529 3776 3776 48.56% 50.15%
D 7777 7530 616 616 7.92% 8.18%

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 3 114 170491 846.49 800 780 200.5
A 4 3 92642 458.19 800 780 200.5
A 11 3 77126 380.8 800 780 200.5
B 7 0 373485 2211.19 796 768 168.6
B 4 170 203814 1204.59 796 768 168.6
B 5 172 149436 881.99 796 768 168.6
C 5 10 10615450 60803.9 632 627 174.6
C 4 5 926954 5306.19 632 627 174.6
C 12 2 110524 629.51 632 627 174.6
D 2 216 1536998 7253.83 746 718 211.8
D 2 249 679419 3204.61 746 718 211.8
D 10 24 305579 1439.46 746 718 211.8

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