ASTROSAT CZTI

Data Quality Report

Orbit 12542

Creation date: 2024-06-27T16:28:55.164910
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/AS1A04_130T01_9000001856_12542cztM0_level2.evt modeM0/AS1A04_130T01_9000001856_12542cztM0_level2_quad_clean.evt
Size (bytes)889,352,640161,167,680
Size848.2 MB 153.7 MB
Events in quadrant A6,908,5491,019,475
Events in quadrant B7,630,2231,001,933
Events in quadrant C5,491,4021,025,139
Events in quadrant D6,078,872991,616

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0282323
B0305352
C0248122
D0264132

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02480
B02480
C02480
D02480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A121892431.993601%
B121897015.751087%
C12189880.721962%
D121891551.271638%

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 13265 12191 56 56 0.42% 0.46%
B 13265 12191 426 426 3.21% 3.49%
C 13265 12191 0 0 0.00% 0.00%
D 13265 12190 42 42 0.32% 0.34%

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 522577 1768.8 1439 1406 294.6
A 1 162 261210 881.75 1439 1406 294.6
A 1 178 159691 537.2 1439 1406 294.6
B 4 239 985438 3622.17 1415 1378 271.7
B 3 64 673410 2473.64 1415 1378 271.7
B 15 222 146248 533.24 1415 1378 271.7
C 3 233 14086 39.06 1400 1405 324.6
C 8 128 10950 29.4 1400 1405 324.6
C 13 61 10060 26.66 1400 1405 324.6
D 1 52 332497 987.26 1400 1360 335.4
D 8 195 102737 302.25 1400 1360 335.4
D 13 104 97438 286.45 1400 1360 335.4

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