ASTROSAT CZTI

Data Quality Report

Orbit 23139

Creation date: 2024-06-27T18:50:22.832193
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/AS1T03_173T01_9000003416_23139cztM0_level2.evt modeM0/AS1T03_173T01_9000003416_23139cztM0_level2_quad_clean.evt
Size (bytes)1,232,487,360266,872,320
Size1.1 GB 254.5 MB
Events in quadrant A8,275,9311,732,331
Events in quadrant B8,581,1511,762,676
Events in quadrant C8,603,6091,684,957
Events in quadrant D10,630,2571,645,594

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0368734
B0373693
C0373493
D0441493

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03700
B03700
C03700
D03700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A182491720.942517%
B182491941.063072%
C182492241.227465%
D182497424.065976%

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 20154 18251 0 0 0.00% 0.00%
B 20154 18251 7 7 0.03% 0.04%
C 20154 18251 10 10 0.05% 0.05%
D 20154 18251 562 562 2.79% 3.08%

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 13 254 24820 52.98 2142 2096 428.9
A 6 16 20860 43.75 2142 2096 428.9
A 3 137 19335 40.2 2142 2096 428.9
B 0 190 152183 368.47 2137 2081 407.4
B 12 111 50308 118.39 2137 2081 407.4
B 0 189 46317 108.59 2137 2081 407.4
C 14 238 325582 678.28 2050 2059 477.0
C 0 10 141689 292.74 2050 2059 477.0
C 7 247 72874 148.47 2050 2059 477.0
D 1 52 1572592 3139.03 2058 1993 500.3
D 1 239 518003 1031.31 2058 1993 500.3
D 13 153 262730 521.11 2058 1993 500.3

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