ASTROSAT CZTI

Data Quality Report

Orbit 14774

Creation date: 2024-06-27T16:59:31.653606
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_022T06_9000002182_14774cztM0_level2.evt modeM0/AS1A04_022T06_9000002182_14774cztM0_level2_quad_clean.evt
Size (bytes)378,063,36069,373,440
Size360.5 MB 66.2 MB
Events in quadrant A2,534,224443,040
Events in quadrant B2,645,586445,133
Events in quadrant C2,734,633432,751
Events in quadrant D3,179,451414,072

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011814
B011812
C011816
D011812

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122211405
B0127061538
C0125181467
D0148651779

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0131
D0122

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5239310.591716%
B5218520.996550%
C5223230.440360%
D51892655.106957%

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 6899 5544 0 0 0.00% 0.00%
B 6934 5534 5 5 0.07% 0.09%
C 6956 5538 0 0 0.00% 0.00%
D 6929 5532 213 213 3.07% 3.85%

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 12 189 93804 730.75 631 618 127.5
A 9 143 8583 62.46 631 618 127.5
A 0 226 5722 40.02 631 618 127.5
B 0 228 81285 674.6 623 607 119.6
B 0 197 36963 304.0 623 607 119.6
B 0 190 23437 190.9 623 607 119.6
C 3 233 394124 2831.64 599 602 139.0
C 4 254 4515 28.16 599 602 139.0
C 13 61 4372 27.13 599 602 139.0
D 5 222 812599 5115.97 591 576 158.7
D 15 0 48486 301.85 591 576 158.7
D 10 70 24107 148.25 591 576 158.7

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