ASTROSAT CZTI

Data Quality Report

Orbit 27264

Creation date: 2024-06-27T19:38:12.737369
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_243T01_9000003918_27264cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27264cztM0_level2_quad_clean.evt
Size (bytes)892,961,280151,093,440
Size851.6 MB 144.1 MB
Events in quadrant A6,486,075928,687
Events in quadrant B6,683,753941,553
Events in quadrant C6,314,194901,052
Events in quadrant D6,660,600887,243

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0277260
B0281720
C0271420
D0288970

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A132731481.115046%
B132731601.205455%
C132732001.506818%
D132731391.047239%

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 14938 13276 21 21 0.14% 0.16%
B 14938 13276 8 8 0.05% 0.06%
C 14938 13276 1 1 0.01% 0.01%
D 14938 13276 51 51 0.34% 0.38%

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 12 96 175153 532.34 1621 1584 326.1
A 0 13 22781 65.01 1621 1584 326.1
A 8 192 21508 61.11 1621 1584 326.1
B 10 245 160557 508.09 1619 1575 312.9
B 0 245 79105 247.78 1619 1575 312.9
B 15 33 42793 131.73 1619 1575 312.9
C 14 238 246237 670.3 1550 1559 365.0
C 8 222 13616 33.03 1550 1559 365.0
C 15 208 12175 29.08 1550 1559 365.0
D 1 52 418032 1046.33 1555 1523 398.1
D 12 233 141443 351.5 1555 1523 398.1
D 2 250 108155 267.87 1555 1523 398.1

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