ASTROSAT CZTI

Data Quality Report

Orbit 50350

Creation date: 2025-01-18T19:06:15.393268
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/AS1C09_003T01_9000006442_50350cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50350cztM0_level2_quad_clean.evt
Size (bytes)819,383,04074,540,160
Size781.4 MB 71.1 MB
Events in quadrant A5,050,384549,557
Events in quadrant B4,913,594602,471
Events in quadrant C10,564,325310,460
Events in quadrant D9,330,151366,986

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191071
B0187621
C0355671
D0320175

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61124747.755236%
B61124246.937173%
C6112304049.738220%
D6112197532.313482%

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 6972 6112 312 312 4.48% 5.10%
B 6972 6112 259 259 3.71% 4.24%
C 6971 6111 2915 2915 41.82% 47.70%
D 6971 6111 2074 2074 29.75% 33.94%

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 7 206 1254527 7896.15 641 625 158.8
A 3 130 282584 1775.57 641 625 158.8
A 4 3 280646 1763.37 641 625 158.8
B 4 170 633965 4626.0 637 614 136.9
B 1 238 521921 3807.63 637 614 136.9
B 10 44 288711 2104.26 637 614 136.9
C 15 230 6282558 44674.59 494 491 140.6
C 13 3 535877 3807.37 494 491 140.6
C 15 232 381643 2710.54 494 491 140.6
D 7 61 4015153 26511.8 534 517 151.4
D 6 42 754401 4978.49 534 517 151.4
D 2 175 368176 2427.94 534 517 151.4

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