ASTROSAT CZTI

Data Quality Report

Orbit 24975

Creation date: 2024-06-27T19:12:11.855519
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/AS1A08_003T17_9000003656_24975cztM0_level2.evt modeM0/AS1A08_003T17_9000003656_24975cztM0_level2_quad_clean.evt
Size (bytes)512,392,32074,073,600
Size488.7 MB 70.6 MB
Events in quadrant A3,366,201448,308
Events in quadrant B3,419,522455,020
Events in quadrant C3,828,730428,743
Events in quadrant D4,429,577425,225

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145572
B0146272
C0157612
D0177653

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69693094.433922%
B69703244.648494%
C69703545.078910%
D69693184.563065%

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 7429 6971 4 4 0.05% 0.06%
B 7430 6972 2 2 0.03% 0.03%
C 7430 6972 21 21 0.28% 0.30%
D 7429 6971 23 23 0.31% 0.33%

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 6 16 14447 76.47 869 847 177.8
A 13 254 10251 52.87 869 847 177.8
A 3 137 8446 42.72 869 847 177.8
B 12 111 21111 120.1 862 837 168.8
B 11 111 19287 109.3 862 837 168.8
B 14 111 17359 97.88 862 837 168.8
C 7 247 428238 2182.93 831 835 195.8
C 14 238 128770 653.42 831 835 195.8
C 8 128 12399 59.06 831 835 195.8
D 8 195 730737 3523.81 839 810 207.1
D 7 238 344864 1660.96 839 810 207.1
D 1 52 113093 542.06 839 810 207.1

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