ASTROSAT CZTI

Data Quality Report

Orbit 34682

Creation date: 2022-07-18T17:43:09.549229
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/AS1T04_078T01_9000004962_34682cztM0_level2.evt modeM0/AS1T04_078T01_9000004962_34682cztM0_level2_quad_clean.evt
Size (bytes)511,594,56067,250,880
Size487.9 MB 64.1 MB
Events in quadrant A2,795,833434,667
Events in quadrant B4,076,316420,115
Events in quadrant C3,136,418425,569
Events in quadrant D5,138,225396,500

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111772
B0152371
C0124541
D0189211

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5136130.253115%
B51364869.462617%
C5136310.603583%
D51361452.823209%

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 7198 5137 3 3 0.04% 0.06%
B 7198 5137 353 353 4.90% 6.87%
C 7198 5137 16 16 0.22% 0.31%
D 7198 5137 76 76 1.06% 1.48%

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 15 169 114335 853.36 669 657 133.2
A 10 83 33317 245.17 669 657 133.2
A 9 143 22437 163.5 669 657 133.2
B 5 172 850810 7129.67 632 618 119.2
B 5 255 454760 3808.41 632 618 119.2
B 0 190 121465 1013.42 632 618 119.2
C 15 159 282214 1926.35 633 640 146.2
C 15 214 220039 1500.98 633 640 146.2
C 14 67 73241 496.69 633 640 146.2
D 8 195 2147232 13936.57 635 619 154.0
D 2 249 176913 1144.56 635 619 154.0
D 10 118 53381 342.55 635 619 154.0

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