ASTROSAT CZTI

Data Quality Report

Orbit 38283

Creation date: 2024-06-27T21:50:43.236282
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/AS1A07_145T01_9000005370_38283cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38283cztM0_level2_quad_clean.evt
Size (bytes)436,749,12090,878,400
Size416.5 MB 86.7 MB
Events in quadrant A2,946,251626,287
Events in quadrant B2,710,946640,055
Events in quadrant C2,631,992604,941
Events in quadrant D7,448,296493,236

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120212
B0116921
C0112641
D0260981

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A552990.162778%
B5529220.397902%
C5529100.180865%
D552991416.531018%

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 7142 5530 2 2 0.03% 0.04%
B 7142 5530 9 9 0.13% 0.16%
C 7142 5530 7 7 0.10% 0.13%
D 7142 5530 891 891 12.48% 16.11%

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 370228 2974.42 613 600 124.3
A 12 16 102801 822.42 613 600 124.3
A 12 189 68478 546.22 613 600 124.3
B 5 172 102249 869.6 609 593 116.9
B 0 229 82139 697.57 609 593 116.9
B 0 183 44457 375.23 609 593 116.9
C 15 214 230977 1655.12 597 600 139.2
C 9 236 38052 269.07 597 600 139.2
C 15 208 13843 95.14 597 600 139.2
D 12 235 2194715 15805.58 572 556 138.8
D 10 203 1663673 11980.23 572 556 138.8
D 2 16 828031 5960.7 572 556 138.8

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