ASTROSAT CZTI

Data Quality Report

Orbit 39400

Creation date: 2024-06-27T22:04:05.560939
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_018T01_9000005470_39400cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39400cztM0_level2_quad_clean.evt
Size (bytes)414,169,92086,564,160
Size395.0 MB 82.6 MB
Events in quadrant A2,880,594594,259
Events in quadrant B2,461,248617,861
Events in quadrant C3,287,285581,356
Events in quadrant D6,290,766457,077

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120093
B0110532
C0133692
D0223712

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5290661.247637%
B5290120.226843%
C52901162.192817%
D5290102919.451796%

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 7022 5291 41 41 0.58% 0.77%
B 7022 5291 7 7 0.10% 0.13%
C 7022 5291 71 71 1.01% 1.34%
D 7022 5291 919 919 13.09% 17.37%

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 420074 3528.78 584 572 118.9
A 13 248 176899 1483.23 584 572 118.9
A 3 1 13296 107.03 584 572 118.9
B 5 172 110228 971.12 585 568 112.9
B 0 190 18546 159.21 585 568 112.9
B 12 111 14616 124.41 585 568 112.9
C 9 187 519792 3884.36 572 576 133.7
C 14 254 307381 2295.27 572 576 133.7
C 15 214 221852 1655.41 572 576 133.7
D 12 235 3850659 29323.44 538 523 131.3
D 13 249 220940 1678.74 538 523 131.3
D 2 249 111571 845.76 538 523 131.3

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