ASTROSAT CZTI

Data Quality Report

Orbit 41735

Creation date: 2024-06-27T22:32:14.483856
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/AS1A12_077T11_9000005696_41735cztM0_level2.fits modeM0/AS1A12_077T11_9000005696_41735cztM0_level2_quad_clean.evt
Size (bytes)516,945,60094,855,680
Size493.0 MB 90.5 MB
Events in quadrant A3,959,977663,671
Events in quadrant B2,655,969712,230
Events in quadrant C4,632,425607,083
Events in quadrant D7,458,322502,625

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151102
B0112973
C0172332
D0260752

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55283215.806802%
B5527100.180930%
C55285409.768452%
D5528122322.123734%

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 9562 5528 308 308 3.22% 5.57%
B 9561 5526 0 0 0.00% 0.00%
C 9562 5527 536 536 5.61% 9.70%
D 9562 5527 1205 1205 12.60% 21.80%

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 15 223 864930 6514.61 653 641 132.7
A 10 83 547717 4123.61 653 641 132.7
A 3 1 11990 85.54 653 641 132.7
B 0 186 23461 180.94 657 640 126.1
B 15 32 17531 133.92 657 640 126.1
B 0 183 16125 122.77 657 640 126.1
C 3 233 1063560 7382.01 615 620 144.0
C 0 10 906684 6292.52 615 620 144.0
C 15 214 217772 1508.1 615 620 144.0
D 12 79 2727701 18928.81 589 574 144.1
D 13 249 1384086 9602.87 589 574 144.1
D 1 47 372751 2583.26 589 574 144.1

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