ASTROSAT CZTI

Data Quality Report

Orbit 27376

Creation date: 2024-06-27T19:39:30.836053
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_249T01_9000003934_27376cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27376cztM0_level2_quad_clean.evt
Size (bytes)1,390,363,200135,961,920
Size1.3 GB 129.7 MB
Events in quadrant A6,327,934890,936
Events in quadrant B6,421,112883,625
Events in quadrant C12,565,575658,329
Events in quadrant D15,929,364797,260

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265740
B0267890
C0454990
D0561660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A128182301.794352%
B128182531.973787%
C12819299823.387160%
D12818258220.143548%

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 13838 12819 0 0 0.00% 0.00%
B 13839 12819 8 8 0.06% 0.06%
C 13838 12818 2298 2298 16.61% 17.93%
D 13838 12819 2203 2203 15.92% 17.19%

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 21977 62.17 1630 1600 327.8
A 12 96 16939 46.8 1630 1600 327.8
A 12 189 16426 45.23 1630 1600 327.8
B 15 32 58494 186.22 1601 1561 305.7
B 12 111 37849 118.69 1601 1561 305.7
B 11 111 33582 104.73 1601 1561 305.7
C 2 16 7066427 22326.77 1349 1357 316.4
C 14 238 212023 665.74 1349 1357 316.4
C 0 207 18174 53.14 1349 1357 316.4
D 1 52 9470395 26988.79 1470 1437 350.8
D 12 227 388778 1104.01 1470 1437 350.8
D 2 250 360052 1022.14 1470 1437 350.8

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