ASTROSAT CZTI

Data Quality Report

Orbit 38717

Creation date: 2024-06-27T21:55:31.268765
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/AS1A12_054T01_9000005392_38717cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38717cztM0_level2_quad_clean.evt
Size (bytes)541,972,80085,394,880
Size516.9 MB 81.4 MB
Events in quadrant A3,155,871634,670
Events in quadrant B2,600,570644,841
Events in quadrant C2,792,602615,492
Events in quadrant D11,077,074298,462

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129453
B0114492
C0117482
D0367852

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5605661.177520%
B5605120.214095%
C5605120.214095%
D5605310555.396967%

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 7187 5606 41 41 0.57% 0.73%
B 7187 5606 2 2 0.03% 0.04%
C 7187 5606 9 9 0.13% 0.16%
D 7187 5606 2713 2713 37.75% 48.39%

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 401984 3109.97 633 620 129.1
A 9 143 151042 1165.54 633 620 129.1
A 0 8 125211 965.39 633 620 129.1
B 4 171 56340 447.31 631 612 124.6
B 5 184 16835 130.22 631 612 124.6
B 0 230 16214 125.23 631 612 124.6
C 15 214 231654 1583.99 620 624 145.9
C 14 254 93628 637.65 620 624 145.9
C 0 10 29674 199.17 620 624 145.9
D 12 235 5327618 42781.21 504 489 124.5
D 2 16 3544664 28462.62 504 489 124.5
D 10 118 88971 710.58 504 489 124.5

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