ASTROSAT CZTI

Data Quality Report

Orbit 43848

Creation date: 2024-06-27T22:56:29.963638
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_087T01_9000005908_43848cztM0_level2.fits modeM0/AS1A13_087T01_9000005908_43848cztM0_level2_quad_clean.evt
Size (bytes)376,695,36074,784,960
Size359.2 MB 71.3 MB
Events in quadrant A3,056,703504,813
Events in quadrant B2,508,132527,062
Events in quadrant C5,535,603454,620
Events in quadrant D2,494,896462,884

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120822
B0103231
C0196122
D0105254

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0900
B0900
C0900
D0900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A44871282.852686%
B4488811.804813%
C448661113.620152%
D44861002.229157%

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 5562 4488 63 63 1.13% 1.40%
B 5563 4489 37 37 0.67% 0.82%
C 5562 4487 489 489 8.79% 10.90%
D 5562 4488 78 78 1.40% 1.74%

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 647767 6054.41 514 505 106.9
A 15 223 350513 3273.93 514 505 106.9
A 2 79 30325 278.93 514 505 106.9
B 5 235 154320 1501.38 514 498 102.5
B 4 170 86938 843.7 514 498 102.5
B 0 199 69777 676.2 514 498 102.5
C 3 233 2644510 22607.9 491 495 117.0
C 15 174 527478 4506.02 491 495 117.0
C 0 239 331170 2827.47 491 495 117.0
D 5 235 213488 1677.97 506 491 126.9
D 13 171 109144 855.96 506 491 126.9
D 4 221 40557 315.64 506 491 126.9

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