ASTROSAT CZTI

Data Quality Report

Orbit 38385

Creation date: 2024-06-27T21:51:53.376718
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_005T08_9000005380_38385cztM0_level2.fits modeM0/AS1A12_005T08_9000005380_38385cztM0_level2_quad_clean.evt
Size (bytes)395,784,00089,568,000
Size377.4 MB 85.4 MB
Events in quadrant A3,000,315618,492
Events in quadrant B4,270,604567,936
Events in quadrant C2,594,103604,468
Events in quadrant D4,372,262548,950

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121893
B0160712
C0107882
D0167642

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5317330.620651%
B531769213.014858%
C531790.169268%
D53171092.050028%

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 7050 5318 15 15 0.21% 0.28%
B 7050 5318 517 517 7.33% 9.72%
C 7050 5318 2 2 0.03% 0.04%
D 7050 5318 81 81 1.15% 1.52%

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 382559 3037.82 618 607 125.7
A 12 189 111742 883.9 618 607 125.7
A 9 143 70863 558.77 618 607 125.7
B 0 183 1800338 15709.96 589 574 114.6
B 4 21 114865 997.63 589 574 114.6
B 0 189 15975 134.43 589 574 114.6
C 15 214 228212 1604.8 602 606 141.8
C 0 10 11690 78.15 602 606 141.8
C 2 16 5683 35.8 602 606 141.8
D 10 203 1332229 9137.35 596 579 145.7
D 1 20 209902 1436.3 596 579 145.7
D 2 250 173330 1185.36 596 579 145.7

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