ASTROSAT CZTI

Data Quality Report

Orbit 44666

Creation date: 2024-06-27T23:05:04.880025
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_072T01_9000006008_44666cztM0_level2.fits modeM0/AS1A13_072T01_9000006008_44666cztM0_level2_quad_clean.evt
Size (bytes)477,809,280109,601,280
Size455.7 MB 104.5 MB
Events in quadrant A4,824,461721,315
Events in quadrant B3,335,460759,241
Events in quadrant C3,159,215727,731
Events in quadrant D5,826,947624,686

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206292
B0150162
C0146852
D0222292

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69622323.332376%
B69631962.814879%
C6963580.832974%
D69635818.344105%

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 7117 6965 5 5 0.07% 0.07%
B 7118 6966 16 16 0.22% 0.23%
C 7118 6966 12 12 0.17% 0.17%
D 7118 6966 414 414 5.82% 5.94%

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 1768907 11078.04 772 754 159.6
A 13 248 40239 247.39 772 754 159.6
A 15 223 15681 93.52 772 754 159.6
B 0 168 84951 551.78 768 746 152.6
B 3 112 56983 368.51 768 746 152.6
B 5 255 39126 251.5 768 746 152.6
C 14 254 106285 597.87 752 754 176.5
C 3 233 61922 346.54 752 754 176.5
C 2 14 21951 120.09 752 754 176.5
D 2 37 876500 4786.73 730 705 183.0
D 1 52 845963 4619.83 730 705 183.0
D 2 249 591696 3230.11 730 705 183.0

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