ASTROSAT CZTI

Data Quality Report

Orbit 49796

Creation date: 2024-12-12T13:32:30.806959
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_037T01_9000006440_49796cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49796cztM0_level2_quad_clean.evt
Size (bytes)911,090,88056,738,880
Size868.9 MB 54.1 MB
Events in quadrant A6,189,168570,840
Events in quadrant B3,604,815668,440
Events in quadrant C8,748,26224,513
Events in quadrant D14,706,99826,133

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0226681
B0147461
C0303373
D0479091

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A612468411.169170%
B61252403.918367%
C6124594096.995428%
D6124593396.881123%

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 7279 6125 470 470 6.46% 7.67%
B 7280 6125 84 84 1.15% 1.37%
C 7278 6123 1590 1590 21.85% 25.97%
D 7278 6123 5165 5165 70.97% 84.35%

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 63 691021 4086.52 676 661 168.9
A 4 249 294383 1738.66 676 661 168.9
A 5 16 260080 1535.61 676 661 168.9
B 10 28 248693 1689.27 692 669 146.8
B 1 255 166274 1127.92 692 669 146.8
B 4 206 136623 925.97 692 669 146.8
C 15 147 2808204 82332.89 99 97 34.1
C 15 148 1795032 52626.98 99 97 34.1
C 15 213 875564 25668.44 99 97 34.1
D 15 168 3212113 38229.74 260 249 84.0
D 7 61 1683129 20030.76 260 249 84.0
D 8 129 1473395 17534.36 260 249 84.0

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