ASTROSAT CZTI

Data Quality Report

Orbit 26719

Creation date: 2024-06-27T19:32:02.996841
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/AS1A09_145T01_9000003848_26719cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26719cztM0_level2_quad_clean.evt
Size (bytes)1,007,576,640186,894,720
Size960.9 MB 178.2 MB
Events in quadrant A6,883,1541,228,959
Events in quadrant B6,879,1641,235,538
Events in quadrant C5,922,8121,204,569
Events in quadrant D10,015,6571,158,431

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280380
B0279870
C0249610
D0381000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A120393412.832461%
B120404433.679402%
C120401681.395349%
D120406995.805648%

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 13434 12041 162 162 1.21% 1.35%
B 13435 12042 192 192 1.43% 1.59%
C 13435 12042 3 3 0.02% 0.02%
D 13435 12042 388 388 2.89% 3.22%

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 13 1129694 3734.68 1485 1458 302.1
A 12 96 23345 72.45 1485 1458 302.1
A 13 254 20774 63.94 1485 1458 302.1
B 0 189 728393 2591.83 1475 1440 280.5
B 10 246 287870 1021.22 1475 1440 280.5
B 12 111 33778 115.29 1475 1440 280.5
C 14 238 229331 672.03 1436 1451 339.1
C 15 208 44679 127.48 1436 1451 339.1
C 3 233 29496 82.71 1436 1451 339.1
D 1 52 3436111 9436.9 1416 1382 364.0
D 2 250 501861 1375.06 1416 1382 364.0
D 7 80 353818 968.32 1416 1382 364.0

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