ASTROSAT CZTI

Data Quality Report

Orbit 17341

Creation date: 2024-06-27T17:35:11.853336
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/AS1A05_169T01_9000002558_17341cztM0_level2.evt modeM0/AS1A05_169T01_9000002558_17341cztM0_level2_quad_clean.evt
Size (bytes)819,290,880185,425,920
Size781.3 MB 176.8 MB
Events in quadrant A5,732,3851,245,669
Events in quadrant B5,829,4301,261,695
Events in quadrant C5,912,8951,171,669
Events in quadrant D6,572,5451,155,415

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02300
B02300
C02300
D02300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0241592
B0244132
C0246712
D0271632

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A113031601.415553%
B113031871.654428%
C113042181.928521%
D113042522.229299%

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 13913 11305 0 0 0.00% 0.00%
B 13913 11305 1 1 0.01% 0.01%
C 13914 11306 1 1 0.01% 0.01%
D 13914 11306 131 131 0.94% 1.16%

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 0 226 12872 38.67 1491 1466 295.0
A 3 137 10888 31.94 1491 1466 295.0
A 12 194 10339 30.08 1491 1466 295.0
B 12 111 33368 114.88 1485 1451 277.8
B 11 111 28903 98.81 1485 1451 277.8
B 14 111 26294 89.42 1485 1451 277.8
C 14 238 221811 676.94 1405 1418 325.6
C 3 233 185844 566.47 1405 1418 325.6
C 7 220 26223 76.19 1405 1418 325.6
D 5 222 1084521 3179.44 1412 1373 340.7
D 2 152 97409 281.9 1412 1373 340.7
D 13 238 38276 108.32 1412 1373 340.7

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