ASTROSAT CZTI

Data Quality Report

Orbit 15475

Creation date: 2024-06-27T17:09:06.571898
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/AS1T02_082T01_9000002286_15475cztM0_level2.evt modeM0/AS1T02_082T01_9000002286_15475cztM0_level2_quad_clean.evt
Size (bytes)217,831,68032,333,760
Size207.7 MB 30.8 MB
Events in quadrant A1,456,940198,811
Events in quadrant B1,479,033200,982
Events in quadrant C1,459,459194,351
Events in quadrant D2,008,364183,349

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060092
B060641
C060061
D078121

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2816782.769886%
B2816732.592330%
C2816742.627841%
D28161896.711648%

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 3802 2817 3 3 0.08% 0.11%
B 3802 2818 0 0 0.00% 0.00%
C 3802 2818 0 0 0.00% 0.00%
D 3802 2818 104 104 2.74% 3.69%

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 13 248 9547 119.16 374 365 77.1
A 9 143 7909 97.9 374 365 77.1
A 0 226 3446 39.98 374 365 77.1
B 3 209 9687 128.56 371 361 72.5
B 12 111 8128 107.07 371 361 72.5
B 11 111 7032 91.96 371 361 72.5
C 14 238 55114 654.56 355 356 83.7
C 3 233 12309 142.88 355 356 83.7
C 14 225 5674 63.57 355 356 83.7
D 12 221 330269 3703.9 358 346 89.1
D 1 52 164980 1848.27 358 346 89.1
D 5 222 62439 697.09 358 346 89.1

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