ASTROSAT CZTI

Data Quality Report

Orbit 39282

Creation date: 2024-06-27T22:02:39.240210
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_037T01_9000005456_39282cztM0_level2.fits modeM0/AS1A12_037T01_9000005456_39282cztM0_level2_quad_clean.evt
Size (bytes)441,731,52061,113,600
Size421.3 MB 58.3 MB
Events in quadrant A2,425,576468,834
Events in quadrant B2,062,975477,113
Events in quadrant C2,083,838456,587
Events in quadrant D9,447,091148,430

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A098222
B087471
C089231
D0309391

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4254210.493653%
B425450.117536%
C4254220.517160%
D4254307672.308416%

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 4254 4254 7 7 0.16% 0.16%
B 4254 4254 0 0 0.00% 0.00%
C 4254 4254 16 16 0.38% 0.38%
D 4254 4252 2410 2410 56.65% 56.68%

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 15 222 307004 3217.9 464 456 95.3
A 10 83 290322 3042.79 464 456 95.3
A 13 248 18139 185.62 464 456 95.3
B 5 184 105380 1132.42 464 450 92.7
B 0 190 67517 723.8 464 450 92.7
B 0 189 39355 419.87 464 450 92.7
C 15 214 175663 1624.32 456 457 107.9
C 9 187 102770 948.54 456 457 107.9
C 3 233 22023 199.93 456 457 107.9
D 12 235 7352582 101962.05 288 280 72.1
D 12 227 688478 9543.96 288 280 72.1
D 5 222 168754 2336.4 288 280 72.1

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