ASTROSAT CZTI

Data Quality Report

Orbit 48055

Creation date: 2024-08-17T05:17:39.315567
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/AS1A13_037T05_9000006392_48055cztM0_level2.fits modeM0/AS1A13_037T05_9000006392_48055cztM0_level2_quad_clean.evt
Size (bytes)503,527,680106,496,640
Size480.2 MB 101.6 MB
Events in quadrant A6,880,261702,028
Events in quadrant B3,505,789747,738
Events in quadrant C2,877,604711,440
Events in quadrant D4,881,624618,979

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0248052
B0147092
C0131912
D0188262

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63693094.851625%
B63691161.821322%
C6369160.251217%
D63693114.883027%

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 7584 6370 154 154 2.03% 2.42%
B 7584 6370 63 63 0.83% 0.99%
C 7584 6370 6 6 0.08% 0.09%
D 7584 6370 268 268 3.53% 4.21%

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 4091613 27247.9 715 701 150.1
A 13 254 11517 72.04 715 701 150.1
A 0 243 10691 66.54 715 701 150.1
B 5 32 278403 1931.46 727 707 143.8
B 0 200 121358 839.17 727 707 143.8
B 5 255 62845 432.19 727 707 143.8
C 12 2 56756 336.12 709 713 166.7
C 14 254 24867 144.87 709 713 166.7
C 12 250 15522 88.82 709 713 166.7
D 2 165 1094139 6283.1 688 664 174.0
D 2 249 368573 2114.0 688 664 174.0
D 7 67 256760 1471.53 688 664 174.0

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