ASTROSAT CZTI

Data Quality Report

Orbit 11222

Creation date: 2024-06-27T16:09:58.457849
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/AS1T01_200T01_9000001638_11222cztM0_level2.evt modeM0/AS1T01_200T01_9000001638_11222cztM0_level2_quad_clean.evt
Size (bytes)676,526,400131,137,920
Size645.2 MB 125.1 MB
Events in quadrant A8,223,526804,001
Events in quadrant B3,822,226897,046
Events in quadrant C3,352,920901,629
Events in quadrant D4,578,212842,588

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0296232
B0164841
C0155721
D0186591

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7554141118.678846%
B75541942.568176%
C7554560.741329%
D75542923.865502%

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 7654 7555 912 912 11.92% 12.07%
B 7654 7556 43 43 0.56% 0.57%
C 7654 7556 8 8 0.10% 0.11%
D 7654 7556 165 165 2.16% 2.18%

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 8 5 3552282 21423.98 800 778 165.8
A 14 238 1470900 8868.32 800 778 165.8
A 15 174 61007 363.32 800 778 165.8
B 4 239 313095 1891.9 859 836 165.1
B 15 204 59767 357.05 859 836 165.1
B 4 80 46412 276.13 859 836 165.1
C 4 254 85125 434.3 838 840 194.1
C 13 61 6383 28.56 838 840 194.1
C 3 202 2107 6.53 838 840 194.1
D 8 195 428600 2130.02 822 794 200.8
D 10 253 367386 1825.24 822 794 200.8
D 1 52 341324 1695.48 822 794 200.8

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