ASTROSAT CZTI

Data Quality Report

Orbit 34205

Creation date: 2022-01-25T06:36:35.157161
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_047T15_9000004882_34205cztM0_level2.evt modeM0/AS1A11_047T15_9000004882_34205cztM0_level2_quad_clean.evt
Size (bytes)651,646,08083,494,080
Size621.5 MB 79.6 MB
Events in quadrant A2,631,578570,393
Events in quadrant B7,315,487520,351
Events in quadrant C3,274,385574,796
Events in quadrant D6,173,281508,643

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108761
B0251001
C0128381
D0218611

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5045100.198216%
B5045203740.376611%
C50451963.885035%
D504561012.091179%

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 7078 5046 5 5 0.07% 0.10%
B 7078 5046 1796 1796 25.37% 35.59%
C 7078 5046 130 130 1.84% 2.58%
D 7078 5046 525 525 7.42% 10.40%

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 66780 512.12 646 636 129.2
A 9 143 25292 190.9 646 636 129.2
A 10 83 23192 174.64 646 636 129.2
B 5 31 1783425 17043.26 561 550 104.6
B 5 15 1611273 15397.59 561 550 104.6
B 5 14 859733 8213.3 561 550 104.6
C 0 10 432698 3007.92 624 631 143.6
C 15 214 226881 1575.08 624 631 143.6
C 9 187 120498 834.48 624 631 143.6
D 8 195 1474578 9471.18 601 589 155.6
D 12 217 1197055 7687.95 601 589 155.6
D 10 118 506633 3251.61 601 589 155.6

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