ASTROSAT CZTI

Data Quality Report

Orbit 04782

Creation date: 2024-06-27T14:46:58.044299
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/AS1G05_156T09_9000000604_04782cztM0_level2.evt modeM0/AS1G05_156T09_9000000604_04782cztM0_level2_quad_clean.evt
Size (bytes)226,895,04023,955,840
Size216.4 MB 22.8 MB
Events in quadrant A1,337,635163,868
Events in quadrant B1,480,060158,485
Events in quadrant C1,879,17287,338
Events in quadrant D1,987,635120,780

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A044
B064
C053
D043

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135217458
B0144068082
C02671119461
D02259614929

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013368
B013474
C013569
D013678

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2967120.404449%
B2922140.479124%
C233034014.592275%
D2485853.420523%

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 7167 3919 1 1 0.01% 0.03%
B 7166 3807 1 1 0.01% 0.03%
C 7168 3097 228 228 3.18% 7.36%
D 7159 3308 66 66 0.92% 2.00%

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 15 47718 697.86 326 318 67.9
A 0 50 20436 296.19 326 318 67.9
A 15 249 5088 70.23 326 318 67.9
B 4 80 110350 1718.29 324 316 64.0
B 14 167 50333 781.06 324 316 64.0
B 10 16 32207 498.01 324 316 64.0
C 14 48 993541 18533.6 223 224 53.6
C 8 128 5638 101.02 223 224 53.6
C 8 112 2425 41.07 223 224 53.6
D 11 132 872616 13583.6 260 252 64.2
D 2 136 57801 896.1 260 252 64.2
D 13 235 41562 643.24 260 252 64.2

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