ASTROSAT CZTI

Data Quality Report

Orbit 35302

Creation date: 2022-04-09T08:51:52.557574
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_023T01_9000005058_35302cztM0_level2.evt modeM0/AS1T05_023T01_9000005058_35302cztM0_level2_quad_clean.evt
Size (bytes)104,394,24015,845,760
Size99.6 MB 15.1 MB
Events in quadrant A524,127113,460
Events in quadrant B1,532,54674,684
Events in quadrant C581,742113,505
Events in quadrant D462,887111,087

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021622
B051311
C022411
D019141

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84130.356718%
B84152262.068966%
C841364.280618%
D841101.189061%

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 841 841 2 2 0.24% 0.24%
B 840 840 433 433 51.55% 51.55%
C 841 841 30 30 3.57% 3.57%
D 841 841 10 10 1.19% 1.19%

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 103689 4660.03 97 95 22.2
A 10 83 36077 1618.6 97 95 22.2
A 7 16 3663 160.5 97 95 22.2
B 5 172 766517 51044.41 67 66 15.0
B 5 236 497324 33116.59 67 66 15.0
B 12 111 1460 92.84 67 66 15.0
C 0 10 169332 7164.07 94 95 23.6
C 15 214 39177 1654.4 94 95 23.6
C 3 233 2762 112.9 94 95 23.6
D 13 249 44042 1762.29 93 90 24.9
D 7 80 30818 1232.06 93 90 24.9
D 8 195 23493 938.36 93 90 24.9

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