ASTROSAT CZTI

Data Quality Report

Orbit 35570

Creation date: 2022-04-27T17:59:04.628779
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/AS1T05_026T01_9000005092_35570cztM0_level2.evt modeM0/AS1T05_026T01_9000005092_35570cztM0_level2_quad_clean.evt
Size (bytes)898,367,040115,822,080
Size856.7 MB 110.5 MB
Events in quadrant A8,408,608668,305
Events in quadrant B6,351,991728,473
Events in quadrant C5,766,395743,243
Events in quadrant D6,031,980701,553

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01960
B01960
C01960
D01960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0315233
B0253982
C0230172
D0245432

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9593126913.228396%
B95936797.078078%
C95931361.417700%
D95933123.252372%

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 12880 9595 1106 1106 8.59% 11.53%
B 12880 9595 435 435 3.38% 4.53%
C 12880 9595 100 100 0.78% 1.04%
D 12880 9595 243 243 1.89% 2.53%

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 4132887 19799.52 1044 1025 208.7
A 10 83 182609 870.13 1044 1025 208.7
A 7 16 27896 128.76 1044 1025 208.7
B 5 172 2063970 10247.7 1061 1033 201.3
B 4 81 39889 193.02 1061 1033 201.3
B 0 189 30059 144.18 1061 1033 201.3
C 0 10 638589 2591.51 1063 1068 246.0
C 9 187 473722 1921.33 1063 1068 246.0
C 15 214 421089 1707.37 1063 1068 246.0
D 1 52 586678 2316.13 1050 1023 252.9
D 7 80 424032 1672.9 1050 1023 252.9
D 8 195 262529 1034.19 1050 1023 252.9

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