ASTROSAT CZTI

Data Quality Report

Orbit 34934

Creation date: 2024-06-27T21:07:13.950201
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/AS1A11_065T12_9000005004_34934cztM0_level2.evt modeM0/AS1A11_065T12_9000005004_34934cztM0_level2_quad_clean.evt
Size (bytes)683,280,00078,281,280
Size651.6 MB 74.7 MB
Events in quadrant A8,455,402477,233
Events in quadrant B3,645,699499,742
Events in quadrant C3,350,528499,873
Events in quadrant D4,813,188450,846

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0294763
B0149242
C0135982
D0185952

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6336140822.222222%
B63361322.083333%
C6336681.073232%
D63363405.366162%

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 9111 6338 1223 1223 13.42% 19.30%
B 9111 6338 97 97 1.06% 1.53%
C 9111 6338 61 61 0.67% 0.96%
D 9111 6337 306 306 3.36% 4.83%

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 5723583 41456.94 684 669 138.0
A 10 83 62345 446.78 684 669 138.0
A 13 6 15015 103.92 684 669 138.0
B 5 172 502406 3618.03 721 702 138.7
B 0 190 112496 806.2 721 702 138.7
B 4 171 62222 443.65 721 702 138.7
C 15 214 266282 1590.12 712 716 167.0
C 0 10 204066 1217.59 712 716 167.0
C 0 207 32224 188.66 712 716 167.0
D 8 195 812741 4707.63 696 676 172.5
D 10 118 260253 1504.8 696 676 172.5
D 1 52 237474 1372.74 696 676 172.5

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