ASTROSAT CZTI

Data Quality Report

Orbit 32959

Creation date: 2024-06-27T20:43:53.241223
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/AS1C07_001T01_9000004752_32959cztM0_level2.evt modeM0/AS1C07_001T01_9000004752_32959cztM0_level2_quad_clean.evt
Size (bytes)496,097,280106,519,680
Size473.1 MB 101.6 MB
Events in quadrant A2,466,165729,844
Events in quadrant B3,220,117734,556
Events in quadrant C2,725,789750,816
Events in quadrant D6,269,752656,212

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104573
B0127722
C0111702
D0222112

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A506080.158103%
B50602184.308300%
C5060591.166008%
D506065512.944664%

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 7093 5061 2 2 0.03% 0.04%
B 7093 5061 134 134 1.89% 2.65%
C 7093 5061 38 38 0.54% 0.75%
D 7093 5061 553 553 7.80% 10.93%

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 12 227 23247 185.09 618 606 122.3
A 13 6 17753 140.18 618 606 122.3
A 0 254 12962 101.01 618 606 122.3
B 5 172 585924 5184.27 614 600 112.9
B 0 219 67951 596.53 614 600 112.9
B 0 229 61385 538.38 614 600 112.9
C 0 10 207224 1471.84 617 624 140.4
C 9 187 36831 257.94 617 624 140.4
C 1 241 16769 115.02 617 624 140.4
D 8 195 1667131 11198.76 581 572 148.8
D 7 223 615031 4128.97 581 572 148.8
D 2 250 604857 4060.61 581 572 148.8

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