ASTROSAT CZTI

Data Quality Report

Orbit 35473

Creation date: 2022-04-21T03:07:37.686556
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_095T01_9000005080_35473cztM0_level2.evt modeM0/AS1T04_095T01_9000005080_35473cztM0_level2_quad_clean.evt
Size (bytes)1,520,755,200274,628,160
Size1.4 GB 261.9 MB
Events in quadrant A7,418,0091,917,054
Events in quadrant B8,949,4421,912,060
Events in quadrant C19,681,5411,602,845
Events in quadrant D8,958,2251,810,670

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0322984
B0367363
C0690943
D0366043

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03200
B03200
C03200
D03200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15555590.379299%
B155554022.584378%
C15555426627.425265%
D155553282.108647%

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 19764 15558 28 28 0.14% 0.18%
B 19764 15558 232 232 1.17% 1.49%
C 19764 15558 3642 3642 18.43% 23.41%
D 19764 15558 259 259 1.31% 1.66%

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 10 83 305402 854.26 1771 1735 355.5
A 15 169 174193 485.15 1771 1735 355.5
A 13 6 41479 111.81 1771 1735 355.5
B 5 236 968121 2914.36 1745 1698 331.6
B 5 172 700342 2106.84 1745 1698 331.6
B 5 200 131228 390.61 1745 1698 331.6
C 4 254 12193540 35188.92 1508 1516 346.5
C 15 214 567339 1633.09 1508 1516 346.5
C 0 10 494039 1421.53 1508 1516 346.5
D 8 195 464022 1121.77 1705 1655 412.2
D 10 118 425037 1027.19 1705 1655 412.2
D 13 249 337152 813.97 1705 1655 412.2

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